| 226 | 26 Dec 25 | 2025 Boxing Day 5k/10k | 10K/5K | Annandale, VA |
| 227 | 15 Jun 25 | 2025 Bozeman Triathlon | triathlon | Bozeman, MT |
| 228 | 19 Apr 25 | 2025 Brandon True Memorial Heroes For The Homeless 5K Presented by Anderson Communities... | triathlon | Lexington, KY |
| 229 | 27 Sep 25 | 2025 Brandy Station 5k/10k | 10K/5K | Orange, VA |
| 230 | 11 May 25 | 2025 Breakup Triathlon | triathlon | Fairbanks, AK |
| 231 | 06 Sep 25 | 2025 Brett-Robinson Alabama Coastal Triathlon | triathlon | Gulf Shores, AL |
| 232 | 03 Aug 25 | 2025 Brewhouse Triathlon | triathlon | Duluth, MN |
| 233 | 07 May 25 | 2025 Brick Endurance Summer Triathlon Series #1 | triathlon | Durham, NC |
| 234 | 17 May 25 | 2025 Brickyard Sprint Triathlon . . | triathlon | Columbus, GA |
| 235 | 17 May 25 | 2025 Bridesburg Memorial Day 5k and 1 Mile Honor Walk | 5K | Philadelphia, PA |
| 236 | 11 May 25 | 2025 Bridges Off Road Triathlon . . | triathlon | Albuquerque, NM |
| 237 | 02 Aug 25 | 2025 Brigantine Beach Triathlon | triathlon | Brigantine, NJ |
| 238 | 16 Aug 25 | 2025 Broken Sword Triathlon | triathlon | Clarksville, AR |
| 239 | 16 Aug 25 | 2025 Brookville Triathlon Duathlon Aquabike | triathlon | Barnegat, NJ |
| 240 | 28 Jun 25 | 2025 Broome County Parks Triathlon . . | triathlon | Whitney Point, NY |