Acronym |
Definition |
| BRL | Bicycle Racing League |
| BRL | Bagger Racing League |
| BRM | Beyond Race Magazine |
| BRP | Billet Racing Products |
| BRP | British Racing Partnership |
| BRPA | Bacolod Racing Pigeon Association |
| BRR | Buck Rope Race |
| BRRS | Bertil Roos Racing School |
| BRRT | Baciocchi Rusconi Racing Team |
| BRSCC | British Racing and Sports Car Club |
| BRW | Bicknell Racing Wheels |
| BSCC | Bremerton Sports Car Club |
| BSCM | British Sports Car Meeting |
| BSRS | Bay State Race Services |
| BTAC | Buffalo Trace Antique Collection |
| BTM | Boost Turbo Management |
| BTR | Blood Type Racing |
| BTR | Brian Tooley Racing |
| BTRA | British Truck Racing Association |
| BUGATTI | Beaten Utterly by Gemera At The Track Instantly, a form of winning, winning a race, performance driving |
| BVBCCI | Bella Vista Bronco Cross Country Invitational |
| BVR | Buena Vista Raceway |
| BWR | Barcelona World Race |
| BYRA | Bayview Yacht Racing Association (Australia) |
| BYRA | Blackwater Yacht Racing Association (Smith Mountain Lake, VA) |
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