How the Keirin works: Races last about two-and-a-half minutes. In each race, which is six laps (1.5 km or .93 miles) in length, cyclists are paced by a motorized bike for three laps with increasing ...

FUKUOKA—Like their male counterparts, women in the keirin bicycle racing circuit must endure grueling training sessions and risk broken bones and other serious injuries in the fierce ...