| 12496 | 03 May 26 | 2026 East Coast Triathlon Festival (ECTF) | triathlon | Glen Allen, VA |
| 12497 | 22 Apr 26 | 2026 Earth Day 5k/10k | 10K/5K | Alexandria, VA |
| 12498 | 17 May 26 | 2026 Dunedin Rotary Triathlon | triathlon | Dunedin, FL |
| 12499 | 02 May 26 | 2026 Dunedin Hog Hustle 5K Event | 5K | Dunedin, FL |
| 12500 | 28 Jun 26 | 2026 Duck Creek Triathlon | triathlon | Howard, WI |
| 12501 | 26 Nov 26 | 2026 Drumstick Turkey Trot 5k/8Miler | 5K/8M | Arlington, VA |
| 12502 | 13 Sep 26 | 2026 Dover Sherborn Boosters Triathlon | triathlon | Dover-Sherborn, MA |
| 12503 | 11 Jul 26 | 2026 Door County Sprint Triathlon - Saturday | triathlon | Egg Harbor, WI |
| 12504 | 12 Jul 26 | 2026 Door County Olympic Triathlon - Sunday | triathlon | Egg Harbor, WI |
| 12505 | 13 May 26 | 2026 Dooby Du Duathlon - WEDNESDAY | triathlon | Sylvania, OH |
| 12506 | 29 Mar 26 | 2026 Doggy Dash 5k/10k | 10K/5K | Leesburg, VA |
| 12507 | 05 Sep 26 | 2026 Dog Days of Summer 5k/10k | 10K/5K | Warrenton, VA |
| 12508 | 16 May 26 | 2026 Dirty Pelican Bike Paddle Run | triathlon | Klamath Falls, OR |
| 12509 | 30 May 26 | 2026 Diamond Kid Triathlon | triathlon | Blue Diamond, NV |
| 12510 | 18 Jul 26 | 2026 DeWitt Crossroads Triathlon | triathlon | DeWitt, IA |