| 571 | 29 Jul 26 | Urban Trail Series | 5K | Rochester, MI |
| 572 | 28 Jun 26 | UpStander 5K | 5K | Cincinnati, OH |
| 573 | 17 May 26 | Upper Dublin Triathlon/Duathlon | Sprint Duathlon/Sprint Triathlon/Sprint Triathlon Relay | Fort Washington, PA |
| 574 | 16 May 26 | Upland Hills Fun Run | 1M/5K/10K | Oxford, MI |
| 575 | 25 Jul 26 | Up, Up, and Away 5K | 5K | North Canton, OH |
| 576 | 13 Jun 26 | Unlock the Ties That Bind 5K | 5K | Tampa, FL |
| 577 | 02 Aug 26 | Unleashed at Stadium Bowl | stair climb | Tacoma, WA |
| 578 | 25 Apr 26 | Unleash the SHE - Rochester | 5K/10K | Rochester, MN |
| 579 | 25 Jul 26 | University Place Twisted Cider 5K, 12K & 1K | 5K/12K | University Place, WA |
| 580 | 18 Jul 26 | University of Okoboji Homecoming Races | 5K/10K/13.1M | Okoboji, IA |
| 581 | 18 Apr 26 | University of North Georgia - Fallen Officer Memorial 5K | 5K | Dahlonega, GA |
| 582 | 25 Apr 26 | University of Iowa's Ribbon Run 5K | 5K | Iowa, IA |
| 583 | 13 Jun 26 | University of Delaware's Chicken Chase | 1M/5K | Dewey Beach, DE |
| 584 | 11 Apr 26 | University of Dayton Department of Physical Therapy Move with PT 5K | 5K | Dayton, OH |
| 585 | 11 Apr 26 | University of Charleston Marathon | 5K/13.1M/26.2M | Charleston, WV |