4023 Jarnik

4012 Geballe

4028th Strategic Reconnaissance Weather Squadron

4022 Nonna (1981 TL4) is a main-belt asteroid discovered on October 8, 1981 by Lyudmila Chernykh at the Crimean Astrophysical Observatory. It is named after a Russian actress Nonna Mordyukova.Photometric observations of this asteroid reported in 2007 show a rotation period of 2.5877 ± 0.0005 hours with a brightness variation of 0.08 magnitude.

400 mH

400 series highway

The 400 metres at the World Championships in Athletics has been contested by both men and women since the inaugural edition in 1983. It is the second most prestigious title in the discipline after the 400 metres at the Olympics.

The 400 metres hurdles at the Summer Olympics is the longest hurdling event held at the multi-sport event. The men's 400 m hurdles has been present on the Olympic athletics programme since 1900, with a sole gap at the 1912 Summer Olympics. The women's event was added to the programme over eighty years later, at the 1984 Olympics.

400s BC (decade)

Melaine Walker 52.64

The 4028th Strategic Reconnaissance Squadron was a component of the 4080th Strategic Reconnaissance Wing, Strategic Air Command, that operated Lockheed U-2 spy planes out of Laughlin AFB, Texas, and Davis-Monthan AFB, Arizona, in the late 1950s and early 1960s. The unit is also sometimes referred to as the 4028th Strategic Reconnaissance Weather Squadron. It was from this unit that the pilots involved in overflights of Cuba during the Cuban Missile Crisis were drawn.

401 Squadron

/ day

400th Bombardment Squadron

Scott Stender

400 cycle

The 400th Bombardment Group is an inactive United States Air Force unit. It was last assigned to the First Air Force, stationed at Charleston Army Airfield, South Carolina. It was inactivated on 10 April 1944.The unit was a World War II B-24 Liberator replacement training unit (RTU). Its graduates were then assigned to combat units in overseas theaters worldwide as replacement personnel.

The 400th Missile Squadron is an inactive United States Air Force unit. It was last assigned to the 90th Operations Group at Francis E. Warren Air Force Base, Wyoming, where it was inactivated in 2005.The squadron was first activated as the 10th Reconnaissance Squadron in 1942. Soon renamed the 400th Bombardment Squadron, it flew Consolidated B-24 Liberators in the Pacific during World War II, where it earned two Distinguished Unit Citations and a Philippine Republic Presidential Unit Citation for its actions in combat. After VJ Day, the squadron remained in the Philippines until January 1946, when it was inactivated.The squadron was activated again in 1964 as the 400th Strategic Missile Squadron, an LGM-30B Minuteman I intercontinental ballistic missile squadron. In 1973 it modernized its Minutemen and in 1986 became the only operational squadron in the Air Force to equip with the LGM-118A Peacekeeper. The squadron was inactivated when the Peacekeeper was removed from the inventory in September 2005, during the implementation of the Strategic Arms Reduction Treaty.

Kris Koenig
English

401st

400th anniversary of Romanov House

4018th Combat Crew Training Squadron

Year 402 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Ahala, Cornutus, Fidenas, Capitolinus, Esquilinus and Fidenas (or, less frequently, year 352 Ab urbe condita). The denomination 402 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

4018 Bratislava

Men and women

401 Squadron or 401st Squadron may refer to:No. 401 Squadron RCAF, a unit of the Royal Canadian Air Force401 Squadron (Portugal), a unit of the Portuguese Air Force

LGM-118A Peacekeeper Test Launch at Vandenburg AFB, California

400s may refer to:The period from 400 to 499, almost synonymous with the 5th century (401–500)The period from 400 to 409, known as the 400s decade

400 blows

(Чулууны Ганхуяг)

4026 Beet

The 401st Fighter Squadron is an inactive United States Air Force unit. Its last was assigned to the 370th Fighter Group, Ninth Air Force, stationed at Camp Myles Standish, Massachusetts. It was inactivated on 7 November 1945.

401st may refer to:401st Air Expeditionary Group, provisional United States Air Force unit assigned to the United States Air Forces in Europe401st Air Expeditionary Wing, inactive unit of the United States Air Force401st Army Field Support Brigade, forward support brigade of the United States Army401st Bombardment Squadron, inactive United States Air Force unit401st Brigade (IDF), an Armored Brigade in the 162nd Division of the Israeli Defence Forces (IDF)401st Fighter Squadron, inactive United States Air Force unit

The 4028th Strategic Reconnaissance Squadron was a component of the 4080th Strategic Reconnaissance Wing, Strategic Air Command, that operated Lockheed U-2 spy planes out of Laughlin AFB, Texas, and Davis-Monthan AFB, Arizona, in the late 1950s and early 1960s. The unit is also sometimes referred to as the 4028th Strategic Reconnaissance Weather Squadron. It was from this unit that the pilots involved in overflights of Cuba during the Cuban Missile Crisis were drawn. Detachments of the 4028th were deployed to Japan and South Vietnam.

402 AD

Distinguished Unit Citation

40mm Bofors

AF OUA

401 CE

Year 402 (CDII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Arcadius and Honorius (or, less frequently, year 1155 Ab urbe condita). The denomination 402 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

400 mm gauge railway

Paul Pilgrim

2013 (MMXIII) is the year of the 400th anniversary of the founding of the House of Romanov, Russia’s last royal dynasty. At the date of this anniversary, a number of events were organized on the occasion in Russia and Ukraine marking a grand jubilee in their history. The celebration marks the accession of Mikhail Fyodorovich Romanov (Russian: Михаи́л Фёдорович Рома́нов) to the Russian throne on 11 (21) June 1613 beginning a new ruling dynasty of the Romanovs.

402 Football Club

We stand on guard

Emblem of the 401st Fighter Squadron

yes

Garrison/HQ

A tax-deferred retirement savings plan set up by an employer, the 401(a) plan allows for contributions by the employee, the employer, or both. Contribution amounts, whether dollar-based or percentage-based, eligibility, and vesting schedule are all determined by the sponsoring employer.The term 401(a) comes from 401(a) of the Internal Revenue Code (Title 26 of the United States Code).

Quebec City's 400th anniversary, celebrated in 2008, commemorated the founding of Quebec City in 1608 by Samuel de Champlain. Quebec City is the oldest francophone city in North America.

United States

Cientistas

402 Payment Required

4025 Ridley

The 400 metres hurdles is a track and field hurdling event. The event has been on the Olympic athletics programme since 1900 for men and since 1984 for women.On a standard outdoor track, 400 metres is the length of the inside lane once around the stadium. Runners stay in their lanes the entire way after starting out of the blocks and must clear ten hurdles that are evenly spaced around the track.

402 (RCAF) Sqn

The 401st "Iron Tracks" Brigade (Hebrew: עקבות הברזל‎‎, Ikvot HaBarzel) is an Armored Brigade in the 162nd Division of the Israeli Defence Forces (IDF). Since August 2014 it is commanded by Colonel Yair Wolanski.

USA

400 metre dash

400 metres hurdler

DLR tunnel to Woolwich Arsenal

The 401st Army Field Support Brigade is a forward support brigade of the United States Army. The 401st AFSB command and controls two Army Field Support Battalions in Afghanistan in support of Operation Enduring Freedom: 3-401st AFSB which is located at Bagram Airfield and responsible for supporting Regional Command East and North; and 4-401st AFSB which is located at Kandahar Air Field and responsible for supporting Regional Command South and West. It reports to Joint Sustainment Command - Afghanistan.

401 On Ramp

4026 IC

The 400 kV Thames Crossing is an overhead power line crossing of the River Thames, between Botany Marshes in Swanscombe, Kent, and West Thurrock, Essex, England. Its towers are the tallest electricity pylons in the UK.The present crossing was built in 1965, and comprises two 190-metre (623 feet) tall lattice towers either side of the Thames. Some suggest that the choice of this height was deliberate, being just taller than the BT Tower in London. The span is 1372 metres (4501 feet), the minimum height of the conductors over the river is 76 metres (249 feet). Each tower has three crossarms and carries two circuits of 400 kV three-phase AC.

Year 401 (CDI) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Vincentius and Fravitus (or, less frequently, year 1154 Ab urbe condita). The denomination 401 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Men

The 400 kV Forth Crossing has the tallest electricity towers (pylon )in Scotland. They stand next to the Clackmannanshire Bridge and the Kincardine Bridge, and cross the River Forth. The tower at the southern end is 153.9 metres (505 ft), that at the northern end 137.16 metres (450 ft) tall.

402 FC

2011 was the 400th anniversary of the King James Version, when a set of events and exhibitions took place commemorating the four-hundredth anniversary of the publication of the King James Version in 1611.

400m Individual Medley

Nonna

Dan Koehler

401 Squadron "Cientistas" (Esquadra 401) was an aerial reconnaissance, photography and maritime patrol squadron of the Portuguese Air Force disbanded in 2011. The squadron also conducted counter-narcotic operations, monitoring of marine pollution in the Portuguese exclusive economic zone, and natural resource surveying.

401 series

Jason Mims
402 FC is an American amateur soccer team based in Omaha, Nebraska, United States. Founded in 2008, the team plays in Region II of the United States Adult Soccer Association a network of amateur leagues at the fifth tier of the American Soccer Pyramid.They play their home games at Morrison Stadium on the campus of Creighton University. The team's colors are blue and white.

402 Lancer

42nd Street, New York

4026th Strategic Wing

400 meters hurdles

The 400 kV Thames Crossing is an overhead power line crossing of the River Thames, between Botany Marshes in Swanscombe, Kent, and West Thurrock, Essex, England. Its towers are the tallest electricity pylons in the UK.The present crossing was built in 1965, and comprises two 190-metre (623 feet) tall lattice towers either side of the Thames. Some suggest that the choice of this height was deliberate, being just taller than the BT Tower in London.

401k ira matrix

402 (year)

41 G. Arae

400 highways

In service

402 Squadron

401 military hospital

400 cycles

4012 BC

The 400 metres hurdles at the World Championships in Athletics has been contested by women since 1980 and by men since 1983.The championship records for the event are 47.18 for men, set by Kevin Young in 1993, and 52.42 m for women, set by Melaine Walker in 2009.

402 Sqn RCAF

Owner

107P/Wilson–Harrington

AUS

400th anniversary of the King James Version

401 winchester

G8V

4019 Klavetter

412 (Transport) Squadron

401 (year)

401(k) IRA matrix

40206 Lhenice

Head Coach

401st Fighter Squadron

41 G. Arae or GJ 666 A is a binary star system in the constellation Ara. Although often called just 41 Arae, it is more accurate to call it 41 G. Arae, as the number 41 is the Gould designation (Flamsteed only covered the northern hemisphere).The primary star in this system is a G-type main sequence star with a stellar classification of G8V. It has about 81% of the mass of the Sun, and 79% of the Sun's radius.

400-ton class ammunition ship is a class of naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The exact type of this class remain unknown as of 2015, because no official information has been released, despite the ships have already been in service around a decade. 400-ton class is the most commonly referred term when describe these ships 400-ton class ammo ship in PLAN service is designated by a combination of an alphabet followed by three-digit number. The alphabet is Y, the abbreviation of Yun, which is for the Chinese character (运), meaning transport. However, the pennant number may have changed due to the change of Chinese naval ships naming convention.Type 400-ton class ammo ship is the result of the need of a replenishment ship that can supply ammo at the sea, because the first generation Chinese replenishment oiler Type 905 Fuqing class lacked of the capability to supply ammunition, so ammo ships are needed to work in conjunction with Type 905 and other replenishment oilers. However, the small size of the 400-ton class limits it to the coastal waters, so in order to supply fleets much further out in the ocean, larger ammunition ships such as Yantai class were needed by the surface combatants. As a result, only a single unit of Type 400-ton class ammo ship was built.

Squadron

401st Fighter Wing

401st Bombardment Squadron

401 (number)

401 derby

Kevin Young 46.78

Canada

400 metres world record progression (disambiguation)

400 series highways (Ontario)

41 G. Arae A

400 meter hurdles

400 years of the telescope

400 metres world record progression

Light transport, training

400 richest Americans

4013 Ogiria

402 Squadron RCAF

true

40mm Grenade

400 Years of the Telescope

400s BC

* Normandy, 1944
* Arnhem
* Rhine

Esquadra 401

400 Years of the Telescope: A Journey of Science, Technology and Thought is a 2009 American documentary film that was created to coincide with the International Year of Astronomy in 2009.

402 "City of Winnipeg" Squadron (French: 402e Escadron) is a Royal Canadian Air Force (formerly the Canadian Forces) squadron based in Winnipeg, Manitoba, Canada

The 401st Army Field Support Brigade is a forward support brigade of the United States Army. The 401st AFSB command and controls two Army Field Support Battalions in Afghanistan in support of Operation Enduring Freedom: 3-401st AFSB which is located at Bagram Airfield and responsible for supporting Regional Command East and North; and 4-401st AFSB which is located at Kandahar Air Field and responsible for supporting Regional Command South and West.

401st Tactical Fighter Wing

400 series highways

1895 BW

400 rabbits

BLR

402 (New Jersey bus)

Year 401 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Potitus, Cossus, Camillus, Ambustus, Mamercinus and Iullus (or, less frequently, year 353 Ab urbe condita). The denomination 401 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

41 G. Arae or GJ 666 A is a binary star system in the constellation Ara. Although often called just 41 Arae, it is more accurate to call it 41 G. Arae, as the number 41 is the Gould designation (Flamsteed only covered the northern hemisphere).The primary star in this system is a G-type main sequence star with a stellar classification of G8V. It has about 81% of the mass of the Sun, and 79% of the Sun's radius. The fainter member of the pair has a peculiar spectrum that shows a deficiency in elements with a higher atomic number than Helium. No planetary companions have been detected in orbit around these stars.The two stars share a highly elliptical orbit that takes several centuries to complete. The estimates of the period range from 693 to 2,200 years, and the average separation of the two stars is about 210 AUs (or 210 times the average distance between the Earth and the Sun).This system has a relatively high proper motion, moving over a second of arc across the sky each year. The space velocity components of this system are [U, V, W] = [+38, +30, −19] km/s. The stars in this system show low chromospheric activity, and have a net space velocity of 52 km/s relative to the Sun. This, in combination with their low metallicity, shows that the pair belongs to the old disk population.

400 match

400plus

400th Missile Squadron

402920 Tsawout

401 BCE

400 metres hurdles at the Olympics

Papua, 400th Bombardment Squadron

402 Chloe

401 area code

400s BC (disambiguation)

400kV Thames Crossing

4024 Ronan

400 series

400kV Forth Crossing

400s (disambiguation)

Quebec City's 400th anniversary, celebrated in 2008, commemorated the founding of Quebec City in 1608 by Samuel de Champlain. Quebec City is the oldest francophone city in North America. Along with Acadia, the city represents the birthplace of French America.La Société du 400e de Québec, the organization responsible for planning the festivities, was chaired by Daniel Gélinas.Together, municipal, provincial and federal levels of the Canadian government invested approximately $155 million in the events and infrastructure created for the celebration.Celebrations took place all over the world. In Canada: Victoria, Vancouver, Edmonton, Calgary, Winnipeg, Regina, Toronto, Ottawa, Gatineau, Montreal, Fredericton, Halifax, Charlottetown, St. John’s, Whitehorse, Yellowknife, and Iqaluit; in the United States: Washington, Jamestown, New York, Atlanta, Boston, Chicago, Fort Lauderdale, Lafayette, and Miami; in Argentina: Cordoba, in France: Paris, Bordeaux, Lyon, Reims, La Rochelle, and Brouage (the birthplace of Samuel de Champlain); in Belgium: the Flemish Region, Brussels, Wallonia, and Namur; in Italy: Turin, Rome, and Milan; in the United Kingdom: London.

Black Pirates (World War II)

Cientistas (Scientists)

402 (number)

412 (RCAF) Sqn

402 Transport and Training Squadron

Interstellar Media Productions

2013 (MMXIII) is the year of the 400th anniversary of the founding of the House of Romanov, Russia’s last royal dynasty. At the date of this anniversary, a number of events were organized on the occasion in Russia and Ukraine marking a grand jubilee in their history. The celebration marks the accession of Mikhail Fyodorovich Romanov (Russian: Михаи́л Фёдорович Рома́нов) to the Russian throne on 11 (21) June 1613 beginning a new ruling dynasty of the Romanovs. The dynasty ended with the abdication of Nicholas II in March 1917.Among the celebrations organized around the world, the Romanov Celebration Gala takes place in Paris on October 5, 2013 in the Chateau of Chantilly. The event was held with the participation of Romanov descendants, international business and cultural elite at one of France’s most stunning historical venues with the finest second collection of paintings after the Louvre Museum. The chateau hosted three official Imperial visits of the Russian Emperors.On the occasion France, which has a long tradition and respect in the Russian history and culture welcomed the guests coming from the fields of business, media, diplomacy, art and sports from Europe, Ukraine and Russia to spend the exclusive weekend in Paris and live the get-together time paying a tribute to the Romanov and sharing the emotions of the celebration with luxury leading names and VIP celebrities. Deriving from the Russian imperial traditions of splendid balls, masquerades and other entertainment for aristocrats, the event supported images of Russia and Ukraine on the international arena as the countries which take care of their heritage and therefore, future of their nations.The founders and organizers of the Romanov Celebration Gala were Natalia Mitrofanova and Michel Soyer.

New Guinea, 400th Bombardment Squadron

* Dieppe
*

401BC

401st Air Expeditionary Wing

400th Bombardment Group

COL

Unofficial 400th Bombardment Sq emblem used in the Pacific

4021 Dancey

Emblem of the 400th Bombardment Group

Yuliya Pechonkina 52.34
The 400 metres hurdles is a track and field hurdling event. The event has been on the Olympic athletics programme since 1900 for men and since 1984 for women.On a standard outdoor track, 400 metres is the length of the inside lane once around the stadium. Runners stay in their lanes the entire way after starting out of the blocks and must clear ten hurdles that are evenly spaced around the track. The hurdles are positioned and weighted so that they fall forward if bumped into with sufficient force, to prevent injury to the runners. Although there is no longer any penalty for knocking hurdles over, runners prefer to clear them cleanly, as touching them during the race slows runners down.The best male athletes can run the 400 m hurdles in a time of around 47 seconds, while the best female athletes achieve a time of around 53 seconds. The current men's and women's world record holders are Kevin Young with 46.78 seconds and Yuliya Pechonkina with 52.34 seconds. Compared to the 400 metres run, the hurdles race takes the men about three seconds longer and the women four seconds longer.The 400 m hurdles was held for both sexes at the inaugural IAAF World Championships in Athletics. The first championship for women came at the 1980 World Championships in Athletics – being held as a one-off due to the lack of a race at the 1980 Summer Olympics.

402 CE

400 metre hurdles

401st Army Field Support Brigade

401k IRA matrix

402 BCE

400 metres at the Olympics

40230 Rožmberk

* 150pxWorld War II EAME Theatre

1949 III; 1949g

The 422d Test and Evaluation Squadron (422 TES) is a United States Air Force unit. It is assigned to the 53d Test and Evaluation Group, stationed at Nellis Air Force Base, Nevada. The squadron performs operational testing of all fighter aircraft and munitions entering and in operational use by Air Combat Command (ACC).The unit was originally formed as the 422d Night Fighter Squadron in 1943. After training in the United States, it was deployed to Ninth Air Force in England in the spring of 1944, prior to the D-Day landings in France. During the run-up to D-Day, the squadron trained with Royal Air Force night fighter units against Luftwaffe raiders who intruded the night skies over England. It was the first American squadron in England equipped with the Northrop P-61 Black Widow night fighter. After the landings in France, the mission of the squadron became the air defense of Allied liberated territory. During the Battle of the Bulge, it also flew day and night interdiction missions against enemy troop movements, bridges and other targets of opportunity. It was inactivated shortly after the war in Europe ended.In 1969, the squadron was re-activated at Nellis Air Force Base by Tactical Air Command to provide combat evaluation and operational testing of new USAF aircraft entering the inventory after developmental testing was completed at Edwards AFB.

400-ton class ammunition ship is a class of naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The exact type of this class remain unknown as of 2015, because no official information has been released, despite the ships have already been in service around a decade. 400-ton class is the most commonly referred term when describe these ships 400-ton class ammo ship in PLAN service is designated by a combination of an alphabet followed by three-digit number.

Distinctive unit insignia

Nigel Barker

401 (New Jersey bus)

400th Strategic Missile Squadron

400 Years of the Telescope: A Journey of Science, Technology and Thought is a 2009 American documentary film that was created to coincide with the International Year of Astronomy in 2009. The film chronicles the history of the telescope from the time of Galileo and features interviews with leading astrophysicists and cosmologists from around the world, who explain concepts ranging from Galileo's first use of the telescope to view the moons of Jupiter, to the latest discoveries in space, including new ideas about life on other planets and dark energy, a mysterious vacuum energy that is accelerating the expansion of the universe.

400m hurdles

400th anniversary of Quebec city

401st Bombardment Group

400 metres at the World Championships in Athletics

400th Fighter-Bomber Squadron

401 Sqn RCAF

40106 Erben

Argent a standing grizzly bear totem of the North Pacific Coast Natives proper

Fighter

401 (disambiguation)

The 400 metres hurdles at the Summer Olympics is the longest hurdling event held at the multi-sport event. The men's 400 m hurdles has been present on the Olympic athletics programme since 1900, with a sole gap at the 1912 Summer Olympics. The women's event was added to the programme over eighty years later, at the 1984 Olympics. It is the most prestigious 400 m hurdles race at elite level.The Olympic records for the event are 46.78 seconds for men, set by Kevin Young in 1992, and 52.64 seconds for women, set by Melaine Walker in 2008. Young's time remains the men's world record for the event. That record has been broken at the Olympics on seven occasions: 1908 (the first official IAAF record), 1920, 1932, 1968, 1972, 1976 and 1992. The women's world record has never been broken in Olympic competition.Edwin Moses is the most successful athlete in the event, having won two gold and one bronze medal. Glenn Davis, Angelo Taylor and Felix Sanchez have also won two Olympic 400 m hurdles titles. Morgan Taylor is the only other athlete beside Moses that has won three medals in the event. Deon Hemmings is the most successful woman, with her 1996 gold and 2000 silver medals, and is the only female athlete to win multiple medals. It is relatively common for 400 m hurdles athletes to also be part of their nation's team for the 4×400 metres relay at the Olympics.The United States is by far the most successful nation in the men's event with 18 gold medals and 40 medals overall—more than half the medals available. American men have swept the medals on five occasions. The American women have the highest medal total, with seven, but an American woman has never won the event. Russia and Jamaica are the only nations to win multiple women's gold medals, with two each. Great Britain is the only nation to have won a gold medal in both the men's and women's event, having three champions in total.

422d Test and Evaluation Squadron

4022 Nonna

4029 Bridges (1982 KC1) is a main-belt asteroid discovered on May 24, 1982 by American astronomer Carolyn Shoemaker at Palomar Observatory.Photometric observations of this asteroid during 2006 revealed that this is a binary asteroid with an orbital period of 16.31 ± 0.01 hours. The larger component has a rotation period of 3.5746 ± 0.0001 hours and a brightness variation of 0.20 magnitude. Based upon occultations of the primary, the ratio of their dimensions is 0.24 ± 0.02.

400 metres hurdles at the World Championships in Athletics

Ganhuyag Chuluun Hutagt

402 MXW

401(k) plan

402BC

«...Ciência, Engenho e Arte...» (...Science, ingenuity and art...)

400 ton-class ammunition ship

400 meter

Athens

400 metres Hurdles

GBR

4020 Dominique

Nellis Air Force Base, Nevada

Squadron badge

Kimberly Generous White

400 m sprint

401 AD

400 meters

401k plan

401st Fighter-Bomber Group

400s (decade)

4015 Wilson–Harrington

* 1932–1945
* 1946–present

4017 Disneya

Albert van Helden

402 BC

400m metre sprint

400 metres dash

The 400 metres at the Summer Olympics has been contested since the first edition of the multi-sport event. The men's 400 m has been present on the Olympic athletics programme since 1896 but nearly seventy years passed before the introduction of the women's 400 m, which has been held continuously since the 1964 Games. It is the most prestigious 400 m race at elite level. The competition format typically has two qualifying rounds leading to a final race between eight athletes.The Olympic record for the men's race was set in 2016, and the record for the women's race was set in 1996. Wayde van Niekerk holds the men's record of 43.03 seconds, breaking world and Olympic records that had been held by Michael Johnson since 1999 and 1996 respectively. Marie-José Pérec is the women's record holder at 48.25 seconds. The men's world record has been broken several times at the Olympics: in 1912, 1932, 1960, 1968, and 2016. Irena Szewińska is the only person to break the women's world record at the competition, doing so in 1976.Only two athletes have won the event twice: Marie-José Pérec became the first to defend the title in 1996, then Michael Johnson followed with victories in 1996 and 2000. No athlete has won more than three medals. Several medalists in the event have also had success in the 200 metres at the Olympics: Johnson, Perec, Szewińska and Valerie Brisco-Hooks have all won titles at both distances. Athletes chosen for the event almost always form part of their nation's team for the 4×400 metres relay at the Olympics.The United States is by far the most successful nation in the event, with 21 gold medals and 44 medals in total. The next most successful nation is Great Britain with three gold among its 13 medals. The 1908 men's 400 metres saw the only walkover in Olympic history, as the American finalists refused to compete in a re-run due to British rules.

Bombardment Training

400 coups

400s decade

60px

4027 Mitton

400s BCE

The 400 metres at the World Championships in Athletics has been contested by both men and women since the inaugural edition in 1983. It is the second most prestigious title in the discipline after the 400 metres at the Olympics. The competition format typically has two or three qualifying rounds leading to a final between eight athletes.The championship records for the event are 43.18 seconds for men, set by Michael Johnson in 1999, and 47.99 seconds for women, set by Jarmila Kratochvílová in 1983. The men's world record has been broken at the competition on one occasion and Johnson's championship record remains the world record as of 2015. The current women's championship record stood as the women's world record for two years and remains the only time that feat has been accomplished at the championships.Michael Johnson is the most successful athlete of the World Championships 400 m, having won four straight titles from 1993 to 1999. He is the only sprint athlete to have won that many individual titles in an event. The second most successful is LaShawn Merritt – a two-time champion and the only other athlete to have won four medals. The most successful women are Marie-José Pérec, Cathy Freeman and Christine Ohuruogu, all of whom have won two world titles. Jeremy Wariner is the only other person to have won two titles, and also has three medals to his name.The United States is comfortably the most successful nation in the discipline – American men have topped the podium ten times and taken 23 medals in total. American women also top the table with two golds among seven medals. Jamaica is the only other nation to have won more than one medal in the men's race, and has won eleven medals in total across the sexes. Great Britain has had two winners and two runners-up. Australia, France and Bahamas are the only other nations to have won multiple gold medals.Jerome Young is the only athlete to be stripped of a medal in the event, as he lost his 2003 gold medal due to a doping ban.

401 Unauthorized

401 Squadron (Portugal)

401 Tactical Helicopter and Training Squadron

4029 Bridges

400th Episode

1986 JF

4017 IC

The 400th Missile Squadron is an inactive United States Air Force unit. It was last assigned to the 90th Operations Group at Francis E. Warren Air Force Base, Wyoming, where it was inactivated in 2005.The squadron was first activated as the 10th Reconnaissance Squadron in 1942.

422d Night Fighter Squadron

Amantle Montsho and Allyson Felix at the finish of the 2011 women's final

400 lux

401 plan

Wyndham Halswelle

402 "City of Winnipeg" Squadron

402 Chloë

401st Fighter-Bomber Wing

400 kV Forth Crossing

41 Eskadra Lotnictwa Taktycznego

4010 Nikol'skij

401st Army Field Support Brigade (AFSB)

400 metres hurdles

4011 Bakharev

«...Ciência, Engenho e Arte...»

400m Hurdles

400th Bombardment Group (Very Heavy)

401st Support Brigade

4015 Wilson-Harrington

401 error

PPUC

40230 Rozmberk

412 (number)

400 years

400 yard game

400 in poetry

4028th Strategic Reconnaissance Squadron

4028 Pancratz

_unknown

41 Field Battery, Royal Australian Artillery

400th Fighter Squadron

400 metres sprint

402 Squadron Navigation School Squadron

Black Pirates

400s in architecture

off

401GSNA

The 422d Test and Evaluation Squadron (422 TES) is a United States Air Force unit. It is assigned to the 53d Test and Evaluation Group, stationed at Nellis Air Force Base, Nevada. The squadron performs operational testing of all fighter aircraft and munitions entering and in operational use by Air Combat Command (ACC).The unit was originally formed as the 422d Night Fighter Squadron in 1943.

401(k) plans

The 400th Bombardment Group is an inactive United States Air Force unit. It was last assigned to the First Air Force, stationed at Charleston Army Airfield, South Carolina. It was inactivated on 10 April 1944.The unit was a World War II B-24 Liberator replacement training unit (RTU). Its graduates were then assigned to combat units in overseas theaters worldwide as replacement personnel. Originally a Second Air Force unit, it was reassigned to First Air Force when Second AF began B-29 Superfortress training. Inactivated in 1944 when the need for B-24 aircrews was diminished.

400 silent years

40227 Tahiti

400th anniversary of the Authorized King James Version

4014 Heizman

401 Fifth Avenue

Reconnaissance, maritime patrol

401 (RCAF) Sqn

Albert G. Wilson and

401 GSNA

4016 Sambre

400th

* 150pxDistinguished Unit Citation
* 150pxAir Force Outstanding Unit Award

400th anniversary of Quebec City

custommenyears

Operational Testing

4023 Jarník

400 m hurdles

401st Support Brigade (United States)

Donald Goldsmith

4018th Combat Crew Training

401 BC

* 6300ZC marine diesel engines,

401st Operations Group

400 hurdles

400 four

AF PUC

400 metre sprint

Air Force Outstanding Unit Award

400 kV Thames Crossing

1975 TQ; 1978 AF

401st Brigade (IDF)

400 error

422d Test & Evaluation Squadron

401 in poetry

The 400 metres at the Summer Olympics has been contested since the first edition of the multi-sport event. The men's 400 m has been present on the Olympic athletics programme since 1896 but nearly seventy years passed before the introduction of the women's 400 m, which has been held continuously since the 1964 Games. It is the most prestigious 400 m race at elite level.

400 series bus routes, Sydney

400 meter dash