| 16081 | 28 Sep 25 | 2025 Boilerman Triathlon | triathlon | Monticello, IN |
| 16082 | 12 Oct 25 | 2025 Block Island Half Marathon | Half Marathon | Block Island, RI |
| 16083 | 06 Sep 25 | 2025 Blake's Tinman Triathlon | triathlon | Reedsburg, WI |
| 16084 | 06 Sep 25 | 2025 Blackhawk YMCA Triathlon | triathlon | Waterloo, IA |
| 16085 | 28 Nov 25 | 2025 Black Friday 5k/10k | 10K/5K | Herndon, VA |
| 16086 | 27 Sep 25 | 2025 Black Canyon Triathlon | triathlon | Montrose, CO |
| 16087 | 14 Sep 25 | 2025 Bishop Memorial 5k/10k | 10K/5K | Alexandria, VA |
| 16088 | 27 Sep 25 | 2025 Big Hurt Multisport Adventure | triathlon | Port Angeles, WA |
| 16089 | 27 Sep 25 | 2025 Beware of Barracuda Triathlon | triathlon | Hazleton, PA |
| 16090 | 13 Sep 25 | 2025 Belews Lake Olympic Triathlon | triathlon | Stokesdale, NC |
| 16091 | 13 Sep 25 | 2025 Beaverton Half Marathon, 5K/10K | 5K/10K | Beaverton, OR |
| 16092 | 20 Sep 25 | 2025 Beaver County Tri Cup | triathlon | Beaver Falls, PA |
| 16093 | 13 Sep 25 | 2025 Bear Lake Brawl Triathlon | triathlon | St Charles, ID |
| 16094 | 18 Oct 25 | 2025 Beach Girl Triathlon | triathlon | Galveston, TX |
| 16095 | 20 Sep 25 | 2025 Be The Light 5K | 5K/10K | Valencia, CA |