- American Historic Racing Motorcycle Association
 - Official guide to the North American vintage racing scene. - Belgium Mettet Motorcycle Racing
- Superbiker racing track, racing times.
- California Motorcycle Road Race Association (CMRRA)
- Formed in 1993 to promote the sport of 50cc to 80cc road racing.
- Central Motorcycle Roadracing Association (CMRA)
- Amateur roadracing association that is affiliated with WERA and holds most races in the WERA South Central region.
- Classic Racing Motorcycle Club
- For solo and sidecar machines manufactured in the period 1955 to 1972 and post-classic machines up to 1981. Site includes race dates and venues.
- Coleraine & District Motor Club
- Provides information on events in Northern Ireland, including news, schedules, and the history of the North West 200 and the Ulster Grand Prix.
- Husqvarna Motorcycle Club
- Resources for Husky devotees around the world.
- Mid-Atlantic Road Racing Club
- Provides safety crews for motorcycle roadraces and a school for new racers in the Mid-Atlantic area.
- Midwest Cafe Racing Association (MCRA)
- Nonprofit association promoting motorcycle road racing and safety in the St. Louis area and the Midwestern U.S.
- Motorcycle Roadracing Association (MRA)
- AMA sanctioned roadracing nonprofit club dedicated to organising safe events for competitors of all skill levels in and around Colorado.
- National Flat Track Racing Association (NFTRA)
- Pro-Bike Bucharest
- Founded to bring together Romanian motorcycle fans in order to build a racing cicuit, a service workshop, a driving school, and general interest in the sport.
- Real Federación Motociclista Española
- Servidor oficial con clasificaciones, reglamentos, noticias, campeonatos, calendarios, y todo lo relacionado con el motociclismo deportivo.
- Rocky Mountain Motocross Association (RMXA)
- Sandia Motorcycle Roadracing Association
- Organises racing and track days in New Mexico
- SoCal XR's
- Information on modified and stock Honda XR100s, newsletter, race information, results, and more.
- Southern 100 Motor Cycle Racing Club
- Sports Riders Association of Colorado
- SRAC provides information, race results, point standings, tracks and more.
- Texas Cross Country Racing Association (TCCRA)
- Sanctions off-road motorcycle racing in North Texas.
- Vintage Dirt Track Racers Association (VDTRA)
- Newsletter, national events, points, racing photo gallery, and more.
- Vintage Flat Trackers
- Dedicated to the continual revival of dirt track oval and TT racing on fire breathing, nickel plated, ageless two wheeled monsters.
- Vintage Road Racing Association
- Dedicated to the collection and preservation of vintage racing motorcycles from the 1940s to the 1970s and their use in racing events.
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