| 586 | 05 Sep 26 | Westerville Donut Run | 1M/5K/10K | Westerville, OH |
| 587 | 27 Jun 26 | Western States Endurance Run | 100M | Olympic Valley, CA |
| 588 | 18 Jul 26 | Western PA CARES for Kids Duathlon and 5K | 5K | Leeper, PA |
| 589 | 26 Nov 26 | Westchester Turkey Trot 5K & 10K | 5K/10K | Valhalla, NY |
| 590 | 18 Jul 26 | Westbrook Strong 5K | 1M/5K | Westbrook, ME |
| 591 | 26 Jul 26 | West Virginia Water Festival 19 Miler and 6 Miler | 6M/19M | Hinton, WV |
| 592 | 09 Oct 26 | West Virginia Trilogy | 50K | Circleville, WV |
| 593 | 14 Nov 26 | West Valley Triathlon | Sprint/Sprint Duathlon/sprint duathlon relay/supersprint triathlon/supersprint triathlon relay/youth triathlon | Avondale, AZ |
| 594 | 31 Oct 26 | West U Halloween Dash | 1M/5K | Houston, TX |
| 595 | 26 Sep 26 | West Tennessee Trail Run for Clean Water | 3M | Lakeland, TN |
| 596 | 06 Jun 26 | West Side Catholic Center Pancake Run | 5K | Cleveland, OH |
| 597 | 25 Jul 26 | West Shore Rotary Club Summerfest 5K | 1M/5K | Fairview Park, OH |
| 598 | 25 Jun 26 | West Seneca 5K | 5K | West Seneca, NY |
| 599 | 24 Oct 26 | West Seattle Monster Dash 5K | 5K | Seattle, WA |
| 600 | 27 Jun 26 | West Salem Freedom Celebration 5K | 1M/5K | West Salem, IL |