
Average speed during Olympic Records in athletic events (in km/h) 1980-2021
100m sprints; the reason for this is that only the first relay runner starts from a stationary position, while the other three runners are able to build up momentum (usually reaching speeds close to their top speed) before starting their own leg. For example, when Jamaica set the world record in the 4x100m relay in 2015, Usain Bolt ran the final leg of the race in 8.65 seconds; almost a full second faster than his world record in the 100m sprint.
When comparing the average speeds across athletics events, the 4x100 meter relay is the fastest event for both men and women. When setting the Olympic Records in 2012, Jamaica's men's team ran at over 39km/h throughout the event, while the United States' women's team ran at over 35 km/h. Both of these speeds are more than 1km/h faster than those recorded in the individual