🚴 Keirin

What is Keirin?

Keirin is a spectacular track cycling sprint discipline that originated in Japan and has been part of the Olympic program since the 2000 Sydney Games. The term "Keirin" (競輪) literally translates to "race around the wheels" and describes a unique race in which six to nine riders start behind a motorized pacer.

What makes Keirin special: Unlike the classic sprint, the race begins in a controlled manner. A motorcycle (Derny) sets the pace and gradually accelerates from about 30 km/h to 50 km/h. Only when the pacer leaves the track – usually 600 to 700 meters before the finish – does the explosive sprint to the finish begin.

History and Development

Origins in Japan (1948)

Keirin was established as a professional cycling discipline in Japan in 1948 and quickly developed into one of the country's most popular competitive sports. In Japan, Keirin is closely tied to the legal betting system and generates billions in revenue annually.

Internationalization

The UCI (Union Cycliste Internationale) adopted Keirin into its competition program in the 1990s, but adapted the rules to international standards. While Japanese Keirin is strictly regulated and includes complex betting rules, the international variant focuses on sporting competition.

Race Format and Rules

Starting Position

Riders are assigned to starting positions by lottery. The starting position can have a significant influence on race strategy, as riders in the outer lane must cover more distance.

Pacer Phase

• Start: The motorcycle rides ahead at about 30 km/h
• Acceleration: Continuous increase to approx. 50 km/h
• Duration: The first 1,400 to 1,600 meters (on a 2,000-meter track)
• Rules: Riders must stay behind the pacer, overtaking is prohibited

Sprint Phase

As soon as the pacer leaves the track at about 600-700 meters before the finish (marked by a bell), the free sprint begins:

• Riders accelerate to maximum speeds of 60-70 km/h
• Position battles and tactical maneuvers are decisive
• Overtaking maneuvers on the inside and outside are allowed
• The first three to four riders (depending on competition format) qualify for the next round

Competition Format

Tactics and Strategy

Positioning Behind the Pacer

The position during the pacer phase is crucial:

• Front (Position 1-2): Good overview, but high risk of being boxed in
• Middle (Position 3-4): Balanced position with multiple options
• Back (Position 5-6): Slipstream advantage, but difficult to catch up

The Decisive Moment

When the pacer leaves the track, riders must react instantly:

1. Immediate Attack: Use speed from the slipstream
2. Position Battle: Conquer the ideal lane (usually slightly outside the pole position)
3. Power Reserves: Give everything in the final 400-600 meters
4. Tactical Blocking: Hinder opponents through clever line choice (within the rules)

Technical Requirements

The Keirin Bike

Keirin bikes comply with UCI regulations for track bikes:

• Fixed gear (no freewheel function)
• No brakes
• Aerodynamic frame
• Disc wheels or high-profile rims
• Weight: Minimum 6.8 kg

Physical Requirements

Differences: Japanese vs. International Keirin

Japanese Keirin

• Professional: Riders are licensed professionals with strict training
• Betting System: Closely linked to legal betting, high revenue
• Rules: Very detailed, strict dress code
• Track: Special Keirin tracks with longer straights
• Distance: Often 2,000 meters or more

International Keirin (UCI)

• Amateur & Pro: Open to all licensed riders
• Sport: Focus on sporting competition without betting system
• Rules: Standardized UCI rules
• Track: Standard cycling tracks (250m length common)
• Distance: Usually 2,000 meters

Famous Keirin Riders

International Stars

• Chris Hoy (Great Britain): Olympic champion 2008, Keirin world champion
• Teun Mulder (Netherlands): Multiple world champion in Keirin
• Matthijs Büchli (Netherlands): Olympic champion 2016
• Jason Kenny (Great Britain): One of the most successful sprint specialists
• Kristina Vogel (Germany): Two-time Olympic champion in Keirin (women)

Japanese Legends

In Japan, Keirin riders are superstars with cult status and million-dollar earnings from prize money through the betting system.

Training for Keirin

Specific Keirin Training

1. Pacer Simulation: Training behind motorcycles or e-bikes
2. Explosive Sprints: Accelerate from moderate pace (50 km/h) to maximum
3. Tactical Training: Simulate position battles in groups
4. Power Endurance: Multiple intense sprints with short breaks
5. Mental Training: Decision-making under pressure

Keirin at Olympics and World Championships

Olympic Games

Since 2000 (men) and 2012 (women), Keirin has been Olympic. The format:

• First round with multiple heats
• Repechage for eliminated riders
• Two semi-finals
• Grand final with six riders

UCI Track Cycling World Championships

Keirin has been part of the World Championships since 1993 and is one of the most prestigious disciplines. The world champion receives the famous rainbow jersey.

Common Mistakes and Disqualifications

Future of Keirin

Keirin continues to evolve and is gaining international popularity:

• Growing Audience Interest: Especially at Olympic Games
• Professionalization: More international professional riders are specializing in Keirin
• Technology: Aerodynamic innovations in bikes and clothing
• Women's Keirin: Growing participation numbers and competitive depth

Last Updated: November 12, 2025