The Keirin: Controlled Chaos at 40+ MPH

In the world of track cycling, no race flips the switch from strategy to pure chaos quite like the Keirin.

Originally created in Japan in the 1940s for parimutuel betting, the Keirin has since become one of the most intense, and beloved, events in international track racing.

How It Works

  • 6 to 7 riders line up on the pursuit line, waiting for the official start. Once the gun is fired to signal the start, the riders will fall into line behind a motorcycle in pre-determined positions. 

  • Over the first 2.5 laps, the motorcycle gradually increases speed, from around 30 to 50 km/h (18–31 mph).

  • Riders cannot pass the motorcycle during this phase, but they will jockey for position to ensure they are ready for the sprint

  • With 2.5 laps to go, the motorcycle pulls off the track...and the real race begins. Riders are in a full dash to the finish. 

  • The first rider to cross the line at the end wins.

Why It’s Strategic

The early laps are all about positioning. Riders fight for the best wheel, usually second or third position, to launch their sprint from. Get caught in the back or boxed in on down low, and your chances plummet.

The trick is knowing when to go. Launch too early and burn out. Wait too long, and you’ll never get around the pack.

Why It’s Wild

Once that derny leaves, it’s mayhem. Riders are sprinting full gas at 40+ mph. You’ll see elbows out, and fearless moves as sprinters thread the needle.

The Keirin is short, savage, and absolutely electric to watch.

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