| 10111 | 08 May 26 | Traverse City Trail Running Festival | 5K/10K | Traverse, MI |
| 10112 | 18 Apr 26 | Travis Russell's Run-A-Thon | 1M/5K | Elkhart, IN |
| 10113 | 04 Jul 26 | Tread, White and Blue 5K Trail Race | 5K | Charlotte, NC |
| 10114 | 06 Jun 26 | Treasure Valley Rescue Run | 5K/10K | Eagle, ID |
| 10115 | 06 Jun 26 | Treasure Valley Triathlon | Olympic/Sprint/supersprint triathlon/youth triathlon | Boise, ID |
| 10116 | 19 Apr 26 | Treat Yo Self | 5K | Cleveland, OH |
| 10117 | 02 May 26 | Tree Hugger Trail Run at Goodell Gardens | 5K | Edinboro, PA |
| 10118 | 18 Apr 26 | Trellis Hope Run | 5K | Winston-Salem, NC |
| 10119 | 20 Jun 26 | Tremont Triathlon | Sprint/supersprint triathlon/supersprint triathlon relay | Tremont, IL |
| 10120 | 23 May 26 | Trent Waldron Half Marathon | 10K/13.1M | Anchorage, AK |
| 10121 | 27 Jun 26 | Trenton Summerfest Half Marathon, 8K, & 5K | 5K/8K/13.1M | Trenton, MI |
| 10122 | 20 Jun 26 | Trestle Hustle | 5K/10K | Madrid, IA |
| 10123 | 13 Jun 26 | Tri 4 Schools Sun Prairie Kids Triathlon | youth duathlon/youth triathlon | Sun Prairie, WI |
| 10124 | 16 May 26 | Tri 4 Schools Waunakee Kids Triathlon | youth triathlon | Waunakee, WI |
| 10125 | 12 Apr 26 | Tri Aggieland | Sprint Triathlon | Bryan, TX |