| 15766 | 02 Aug 25 | 2025 Booster Bash Tri & 5K | triathlon | Salem, IL |
| 15767 | 25 Oct 25 | 2025 Book It for Books 5k/10k | 10K/5K | Springfield, VA |
| 15768 | 30 Aug 25 | 2025 Bonney Lake Triathlon | triathlon | Bonney Lake, WA |
| 15769 | 12 Oct 25 | 2025 Bolivar Live Triathlon | triathlon | Port Bolivar, TX |
| 15770 | 02 Aug 25 | 2025 Boiling Springs Triathlon | triathlon | Boiling Springs, PA |
| 15771 | 02 Aug 25 | 2025 Block Island Triathlon | triathlon | Block Island, RI |
| 15772 | 12 Oct 25 | 2025 Block Island Half Marathon | Half Marathon | Block Island, RI |
| 15773 | 06 Sep 25 | 2025 Blake's Tinman Triathlon | triathlon | Reedsburg, WI |
| 15774 | 01 Sep 25 | 2025 Blackland Triathlon & Youth Triathlon (LABOR DAY) | triathlon | Plano, TX |
| 15775 | 06 Sep 25 | 2025 Blackhawk YMCA Triathlon | triathlon | Waterloo, IA |
| 15776 | 28 Nov 25 | 2025 Black Friday 5k/10k | 10K/5K | Herndon, VA |
| 15777 | 27 Sep 25 | 2025 Black Canyon Triathlon | triathlon | Montrose, CO |
| 15778 | 18 Oct 25 | 2025 BIGFOOT! 1M 5K 10K 13.1 26.2- Benefitting The National Park Foundation | 10K/13.1/1M/26.2/5K/Triathlon/Ultra | Baton Rouge, LA |
| 15779 | 18 Oct 25 | 2025 BIGFOOT! 1M 5K 10K 13.1 26.2- Benefitting The National Park Foundation | 10K/13.1/1M/26.2/5K/Triathlon/Ultra | Newport, ME |
| 15780 | 18 Oct 25 | 2025 BIGFOOT! 1M 5K 10K 13.1 26.2- Benefitting The National Park Foundation | 10K/13.1/1M/26.2/5K/Triathlon/Ultra | Baltimore, MD |