| 1321 | 25 Oct 25 | Trick or Trot | 5K | Batavia, NY |
| 1322 | 18 Oct 25 | Trick or Tri at Merrill Ranch | Sprint Duathlon/Sprint Triathlon/Sprint Triathlon Relay/youth triathlon | Florence, AZ |
| 1323 | 25 Oct 25 | Trick or Treat Trail Run | 5K/10K | Sioux Falls, SD |
| 1324 | 25 Oct 25 | Trick or Treat 5K | 5K | Seattle, WA |
| 1325 | 25 Oct 25 | Trick or Trail 5K & Spooky Sprint 1 Mile | 1M/5K | Hendersonville, NC |
| 1326 | 16 Aug 25 | TRIC- Color Fun Run | 5K | Carterville, IL |
| 1327 | 13 Sep 25 | Triboro Adventure Tour | 13.1M | Astoria, NY |
| 1328 | 02 Aug 25 | TriathaMom | Sprint Duathlon/Sprint Triathlon/Sprint Triathlon Relay | Riverton, UT |
| 1329 | 11 Oct 25 | Triangle Run/Walk for Autism | 1M/5K | Raleigh, NC |
| 1330 | 16 Nov 25 | Triangle Run Smart Fall Kids Race | kids run/run | Cary, NC |
| 1331 | 27 Sep 25 | Triad Run/Walk for Autism | 5K | Greensboro, NC |
| 1332 | 23 Aug 25 | Tri-Warriors Youth Triathlon | youth triathlon | Pembroke, NC |
| 1333 | 30 Aug 25 | Tri-the-Heights Youth Triathlon | youth triathlon | Grandview Heights, OH |
| 1334 | 26 Oct 25 | Tri-State Warrior Run | 5K/10K/13.1M | Quincy, IL |
| 1335 | 27 Sep 25 | Tri-State Running Company 859 Beer Mile | 1M | Fort Mitchell, KY |