| 1606 | 08 Aug 26 | TRI Columbus | Sprint Duathlon/Sprint Triathlon | Columbus, IN |
| 1607 | 29 Aug 26 | TRI Clear Lake | Olympic/Sprint Triathlon/Sprint Triathlon Relay | Clear Lake, IA |
| 1608 | 16 Aug 26 | Tri CLE Rock Roll Run | Olympic/Sprint/supersprint duathlon/supersprint triathlon | Cleveland, OH |
| 1609 | 18 Jul 26 | Tri Boulder | Half/Olympic/Sprint Triathlon | Boulder, CO |
| 1610 | 13 Mar 27 | Tri 4 the Cure | 5K | Anthem, AZ |
| 1611 | 13 Jun 26 | Tri 4 Schools Sun Prairie Kids Triathlon | youth duathlon/youth triathlon | Sun Prairie, WI |
| 1612 | 15 Aug 26 | Tri 4 Schools Middleton Triathlon | youth triathlon | Middleton, WI |
| 1613 | 20 Jun 26 | Trestle Hustle | 5K/10K | Madrid, IA |
| 1614 | 27 Jun 26 | Trenton Summerfest Half Marathon, 8K, & 5K | 5K/8K/13.1M | Trenton, MI |
| 1615 | 02 Aug 26 | Trenton Fish and Game Club Autism Awareness Trail Run | 5M | Holland Patent, NY |
| 1616 | 13 Jun 26 | Tremont Turkey Festival 5K | 5K | Tremont, IL |
| 1617 | 20 Jun 26 | Tremont Triathlon | Sprint/supersprint triathlon/supersprint triathlon relay | Tremont, IL |
| 1618 | 12 Sep 26 | Trek The Creek Scott Bohman Memorial 5K | 5K | Francis Creek, WI |
| 1619 | 31 Oct 26 | Trek or Treat 5K | 5K | Douglasville, GA |
| 1620 | 11 Jul 26 | Tree.1 Run for Fun | 5K | Sturbridge, MA |