| 466 | 23 Sep 26 | 2026 Northwest Series - Day 5 (ID) | 5K/10K | Lewiston, ID |
| 467 | 24 Sep 26 | 2026 Northwest Series - Day 6 (ID) | 5K/10K | Lewiston, ID |
| 468 | 25 Oct 26 | 2026 Ocean State Rhode Races - Marathon, Half Marathon and 5k | 5K | Narragansett, RI |
| 469 | 11 Jul 26 | 2026 Oconto Falls Dri - Tri | triathlon | Oconto Falls, WI |
| 470 | 26 Nov 26 | 2026 Oklahoma City Turkey Trot | 5K | Oklahoma City, OK |
| 471 | 18 Sep 26 | 2026 Oktoberfest 5k & 10k | 10K/5K | Alexandria, VA |
| 472 | 20 Sep 26 | 2026 Oktoberfest Sprint Triathlon - Longmont | triathlon | Longmont, CO |
| 473 | 17 May 26 | 2026 Onion Man Triathlon | triathlon | Walla Walla, WA |
| 474 | 30 May 26 | 2026 OnondagaMan Half Iron | triathlon | Jamesville, NY |
| 475 | 29 Mar 26 | 2026 Operation Enduring Warrior 5k/10k/Half | 10K/13.1/5K | Potomac, MD |
| 476 | 25 Apr 26 | 2026 Orange County Triathlon & Duathlon | triathlon | Mission Viejo, CA |
| 477 | 14 Mar 26 | 2026 Oro Valley Triathlon & Duathlon Festival | triathlon | Oro Valley, AZ |
| 478 | 16 Aug 26 | 2026 Outdoor Divas Triathlon | triathlon | Longmont, CO |
| 479 | 28 Jun 26 | 2026 PAL Challenge 5k & 10k | 10K/5K | Annapolis, MD |
| 480 | 28 Feb 26 | 2026 Paradise Springs 5k/10k | 10K/5K | Clifton, VA |