The Olympic Keirin pits the world's best sprinters against each other in this fast, exciting and often dangerous event.
The Keirin starts with riders being held by helpers and taking off from a standstill. However, the Keirin uses a pacer on an electric motorbike to bring the pack of six or fewer opponents up to speed. Before the start, riders draw lots to see where they will be positioned behind the pacer and, after take-off, they must settle into that order as the race begins.
