| 2401 | 31 Aug 25 | Breaking Down the Stigma Addiction and Mental Awareness 5K | 1M/5K | Lorain, OH |
| 2402 | 15 Nov 25 | Breakthrough 5K | 5K | Louisville, KY |
| 2403 | 04 Oct 25 | Breast Cancer Awareness 5K | 5K | Malden, MA |
| 2404 | 10 Oct 25 | Breast Reconstruction Awareness Close the Loop 5K | 5K | New Orleans, LA |
| 2405 | 02 Aug 25 | Breathe n Run | 5K | Virginia Beach, VA |
| 2406 | 01 Sep 25 | Breathitt County Honey Run | 5K/10K | Jackson, KY |
| 2407 | 11 Oct 25 | Breckenridge Road Marathon | 10K/13.1M/26.2M | Breckenridge, CO |
| 2408 | 25 Oct 25 | Brecksville Kiwanis Trick-or-Trot | 1M/5K | Brecksville, OH |
| 2409 | 15 Aug 25 | Bremenfest 5K | 1M/5K | New Bremen, OH |
| 2410 | 27 Nov 25 | Bremond Turkey Trot | 5K | Bremond, TX |
| 2411 | 27 Sep 25 | Brenda's Brown Bosom Buddies Sistah Strut | run | Birmingham, AL |
| 2412 | 18 Oct 25 | Brent Chesney's Sandcastle 5K/10K | 5K/10K | Corpus Christi, TX |
| 2413 | 21 Sep 25 | Brent Kostanko Memorial Walk/Run | run | Ann Arbor, MI |
| 2414 | 27 Nov 25 | Brentwood Turkey Trot for Schools | 5K | Brentwood, CA |
| 2415 | 06 Sep 25 | Brett Robinson Alabama Coastal Triathlon | Olympic/Sprint Triathlon/Sprint Triathlon Relay | Gulf Shores, AL |