4 * 100 meter relay race
Track venue The track and field competition of the 29th Olympic Games was held in Beijing National Stadium (Bird's Nest), which is a standard 400-meter venue with a radius of 36.5 meters along the inner protrusion and outer edge. Each runway is 1.22m wide (including the right lane), and the lane width is 5cm. Run to the left in the infield. The lane number should be the innermost lane on the left, such as lane 1. That is, the race is played counterclockwise, and the circular runway is 1 to runway 9 from the inside out.

The starter must be used for the start of each track event of 400 meters and below (including 4× 100 meter first stick and 4×400 meter relay). The starting posture of other track events is standing posture. The starting device is connected with the starting monitor to help the starter confirm whether the starting is a foul or not and the athlete responsible for the starting foul.

The rules of the relay race are that the 4× 100 meter relay race is divided into lanes, and the catcher can start in front of the relay zone 10 meter.

In the relay race, athletes must complete the baton in the 20-meter relay area. The judgment of "in the relay area" is based on the position of the baton, not on the position of the participants' bodies or limbs. In the 4×400-meter relay race, the first corner of the first and second bars of the first bar is running in separate lanes, and the second bar athlete can only grab the lane freely after running to the lane-grabbing line. The transmission and reception of the first stick must be carried out on the runway designated by the players. For the passing of other bars, the referee will arrange the teammates of the third and fourth bars in the relay area from the inside out according to the order that the athletes of the second and third bars pass the starting point of 200 meters. All receivers are not allowed to start outside the relay area.

The baton must be held in your hand until the end of the game. Anyone who drops the baton should pick it up by himself, and only cross his own runway without affecting others.

In all relay events, the baton handover must be completed in the baton handover area. The judgment of "in the baton receiving area" is based on the position of the baton, not on the position of the competitor's body or limbs. After the baton is passed, any player must stay on the track of his own team until all teams have passed the baton, otherwise he will be disqualified. Deliberately crossing the runway to hinder other teams will also be disqualified.

Olympic women's 4× 100-meter relay-a historical record The women's 4× 100-meter relay was not listed as an Olympic event until 1928, when the best result was 48.4 seconds. At the 1936 Berlin Olympic Games, the Germans set the first world record in 46.4 seconds in the preliminary round.

At the Rome Olympic Games, the United States set a new world record in the preliminaries with a time of 44.4 seconds. 1952 Olympic Games, with climax after climax. First, Australia broke the world record in the preliminaries, and then the United States rewrote the record in the final. In the 1960s, the former Soviet Union also rewrote the world record several times. 1976 The former East German team set a world record of 42.50 seconds. The current world record is 4 1.37 seconds set by former East German players Gladic, Li Ge, Oswald and Geer on 19851October 6 in Canberra.