Tags: Olympic Event, Olympics.
The men’s Keirin at the 2008 Summer Olympics took place on August 16 at the Laoshan Velodrome. This track cycling event consisted of multiple rounds. In each race the four to seven cyclists in the heat covered 8 laps of the track. The first 5.5 laps were behind a motorized pacer called a derny which gradually increased speed up to 50 kilometres per hour. The derny then left the track and the cyclists then raced the final 2.5 laps to the finish.In the first round four heats were held.