| 10576 | 28 Jun 26 | 2026 Boulder Sunrise Triathlon | triathlon | Boulder, CO |
| 10577 | 12 Jul 26 | 2026 Boulder Peak Triathlon | triathlon | Boulder, CO |
| 10578 | 27 Jun 26 | 2026 Bottomless Triathlon | triathlon | Roswell, NM |
| 10579 | 23 Aug 26 | 2026 Boston Triathlon | triathlon | Boston, MA |
| 10580 | 25 Apr 26 | 2026 Booking It Through the Bluff Triathlon & 10K | triathlon | Hokes Bluff, AL |
| 10581 | 26 Apr 26 | 2026 Bluemont Station Brewery & Winery 5k | 5K | Bluemont, VA |
| 10582 | 21 Feb 26 | 2026 Blizzard Blast 5k/10k | 10K/5K | Williamsburg, VA |
| 10583 | 25 Jul 26 | 2026 Black Squirrel Scurry Triathlon | triathlon | Merrill, WI |
| 10584 | 27 Nov 26 | 2026 Black Friday 5k/10k | 10K/5K | Herndon, VA |
| 10585 | 03 Jan 26 | 2026 Black Diamond Half Marathon, 10K & 5K | triathlon | Tyler, TX |
| 10586 | 20 Jun 26 | 2026 Black Butte Triathlon | triathlon | Corning, CA |
| 10587 | 12 Apr 26 | 2026 Bill Bone OLYMPIC Triathlon | triathlon | West Palm Beach, FL |
| 10588 | 07 Jun 26 | 2026 Best in the West Triathlon Festival - Sunday Events | triathlon | Foster, OR |
| 10589 | 06 Jun 26 | 2026 Best in the West Triathlon Festival - Saturday Events | triathlon | Foster, OR |
| 10590 | 18 Apr 26 | 2026 BENGAL TRIATHLON (+Du & 5K) | 5K | Pocatello, ID |