| 286 | 17 May 25 | 2025 Brickyard Sprint Triathlon . . | triathlon | Columbus, GA |
| 287 | 17 May 25 | 2025 Bridesburg Memorial Day 5k and 1 Mile Honor Walk | 5K | Philadelphia, PA |
| 288 | 11 May 25 | 2025 Bridges Off Road Triathlon . . | triathlon | Albuquerque, NM |
| 289 | 02 Aug 25 | 2025 Brigantine Beach Triathlon | triathlon | Brigantine, NJ |
| 290 | 16 Aug 25 | 2025 Broken Sword Triathlon | triathlon | Clarksville, AR |
| 291 | 16 Aug 25 | 2025 Brookville Triathlon Duathlon Aquabike | triathlon | Barnegat, NJ |
| 292 | 28 Jun 25 | 2025 Broome County Parks Triathlon . . | triathlon | Whitney Point, NY |
| 293 | 14 Sep 25 | 2025 Brunch Run Dallas Ft. Worth, TX | 1K/5K | Burleson, TX |
| 294 | 22 Nov 25 | 2025 Brunch Run Fresno, CA | 1K/5K | Sanger, CA |
| 295 | 17 Aug 25 | 2025 Bryan Park 5k/10k | 10K/5K | Richmond, VA |
| 296 | 06 Sep 25 | 2025 Buchanan Triathlon | triathlon | Buchanan, VA |
| 297 | 22 Nov 25 | 2025 Budds Creek Turkey Trot 5k/10k/Half | 10K/13.1/5K | Mechanicsville, MD |
| 298 | 01 Jun 25 | 2025 Buffalo Graniteman Triathlon | triathlon | Buffalo, MN |
| 299 | 05 Jul 25 | 2025 Bunnyman Fireworks 5k/10k | 10K/5K | Lorton, VA |
| 300 | 29 Nov 25 | 2025 Bunnyman Turkey Trot 5k/10k | 10K/5K | Lorton, VA |