track
At the racetrack. Racecourse is an oval basin, and the track is made of hardwood, cement or asphalt. The perimeter of the runway is 400 meters, 250 meters and 333.33 meters, of which 333.33 meters is an international standard venue. The runway is 5 ~ 9 meters wide, and the curve slope is 25 ~ 45 degrees. The bicycle used should be a dead flywheel, and it is not allowed to install a speed change device and brakes. Olympic events include chase, time trial, scoring and the first game.
Chasing competition is divided into individual competition and team competition. ① At the start of the individual pursuit race, two athletes are located at the starting line and the finishing line in the middle of the runway, starting at the same time and chasing each other. Within the specified distance, if the athletes behind catch up with or side by side with the athletes in front, and are eliminated by the pursuers or side by side, and are not forced to go up, the time to reach the finish line will determine the outcome. The winner takes part in the next round of competition. ② Four athletes from each team participated in the team chase. In the competition, the athletes keep a distance of about 1 m, stand in a trapezoidal team, and at the same time start the gun. For example, the third athlete of one team catches up with or ties up with the third athlete of another team, and the team that catches up or ties up is forced to be eliminated. If you don't catch up, the ranking will be judged by the result of the third athlete of each team reaching the finish line. Three athletes from each team must reach the finish line to calculate the results. At present, there are men's 4000m individual chase (included in 1964), 4000m team chase (included in 1920) and women's 3000m individual chase (included in 1992) in the Olympic Games.
The time trial 1889 was designed by Li Bide. Rank athletes according to the time when they reach the finish line. During the competition, athletes start at the same starting point and draw lots to decide the starting order. The first foul delayed five people from starting again, and the second foul disqualified them. The ranking is judged according to each athlete's performance at the finish line, with the best ranked first. If the scores are equal, the rankings are tied. Only the men's 1000 meter time trial was set up in the Olympic Games, and 1928 was listed as an event.
The scoring competition is also called the points competition. Draw lots before the game to arrange the order and designate riders. In the race, the rider leads the rider to run a lap. When he reached the starting line, the starter fired his gun and the race officially began. Every five laps, the top four students will be graded. The first one gets 5 points, the second one gets 3 points, the third one gets 2 points, and the fourth one gets 1 point. Double at half-time and score. Ranked according to the total scores of participating athletes. There are only 50 km individual scoring events for men and women in the Olympic Games, which are listed as 1984 and 1996 respectively.
The first race is also called speed race. Generally, 2 ~ 4 athletes are arranged to start at the same time and place. Counting the last 200 meters, the first one to cross the finish line wins. The men's and women's 1000 meters were listed as Olympic events in 1920 and 1992 respectively.
In the 28th Olympic Games in 2004, there were1000m individual time trial, 4000m team chase, 4000m individual chase, Olympic Games, individual scoring, Madison, Lin Kai, women's first race, 3000m individual chase, individual scoring and 500m individual time trial. * * * Athletes 188, including 54 males/KLOC-0 and 34 females.
A road race/car race
Held on highways with various terrain changes. There are individual road races and team road races in the Olympic Games. ① Choose circular or round-trip routes for individual road races. The road surface should have ups and downs and slopes, and the starting point and ending point should be in the same place as far as possible. The race is 0/70 ~ 200 km for men and 60 ~ 84 km for women. During the competition, all the athletes set off collectively at the starting line and arranged in the order in which the athletes arrived at the finish line. Individual events for men and women were listed as Olympic events in 1896 and 1984 respectively. ② Choose a relatively flat road surface for the road team competition, and set a bend on the way, with the starting point and the ending point at the same place. There are 4 people in each team, and they set off in a row at the starting line. The departure interval between teams is 2-3 minutes. Each team must have three athletes to reach the finish line, and the ranking will be judged according to the result of the third athlete reaching the finish line. If the results are equal, the ranking will be judged by the result that the team's first place reaches the finish line. Only men's team events are held in the Olympic Games, and 19 12 is listed as the event.
In the 28th Olympic Games in 2004, there were four events: men's individual time trial, individual event, women's individual first race and individual time trial. ***2 12 athletes participated in the competition, including 55 males/kloc-0 and 57 females.
cross-country race
Started in France. In 1950s, some cyclists were tired of boring training and racing on modern highways. They went to the hilly area to look for new environment and new challenges, so a brand-new way of sports came into being. Cycling cross-country should be done by mountain bike. It is said that James Finley Scott, a student of the University of California, USA, was the first person to convert ordinary bicycles into mountain bikes. After that, cross-country sports gradually became popular in Europe and formed competitions. 1990, the international cycling union recognized the sport, and199/kloc-0 held the World Cup for the first time in. Cross-country races should choose rugged roads with natural obstacles and set up artificial obstacles when necessary. The competition is 40-50 km for men and 30-40 km for women. During the competition, teams will start in a row from left to right, and the ranking will be judged according to the time when they reach the finish line. Both men's and women's individual cross-country races were listed as Olympic events in 1996.
In the 28th Olympic Games in 2004, there were two events for men and women, and 80 athletes participated, including 50 men and 30 women.
Cycling in the 2004 Athens Olympic Games is divided into three types: road race, track race and mountain race. There are two kinds of road races: road races and individual time trials. The road race will be held around the ancient city of Athens, while the individual time trial will be held in Vouliagmeni Olympic Center from August 14 to August 18.
The track race will be held at the Okay Olympic Circuit from August 20 to 25, and the mountain race will be held at Parnitha mountain cycling track specially built for this competition from August 27 to 28.
In the cycling event of the 2008 Beijing Olympic Games, BMX bmx cross-country event was newly established, and two events were cut off from the cycling event.
Rogge said that the BMX cross-country race of the Beijing Olympic Games will include both men's and women's events. However, he also said that the new project will not increase the number of athletes participating in cycling events, and the total number of athletes participating in cycling events in the Beijing Olympic Games will remain at 300. As for which two events to reduce, the International Cycling Federation has not yet officially determined.
BMX cross-country race is a popular sports activity in Europe and America, which is deeply loved by teenagers. In recent years, some sports activities, both of which belong to "extreme sports", have become the official events of the Olympic Games. For example, triathlon in the Summer Olympics, mountain biking and snowboarding in the Winter Olympics.
29/ 14/article 2 1 199 1429 . shtml