| 1501 | 18 Jul 26 | TriWalloon | Sprint Duathlon/Sprint Triathlon/Sprint Triathlon Relay/aquathon | Walloon Lake, MI |
| 1502 | 28 Jun 26 | TriWaco | Olympic/Other/Sprint Triathlon/Sprint Triathlon Relay | Waco, TX |
| 1503 | 07 Nov 26 | Tristin Franklin Memorial Timed 5K/1M | 1M/5K | Pleasant View, TN |
| 1504 | 08 Aug 26 | TriState Veterans Memorial Fund 5K | 5K | Sewell, NJ |
| 1505 | 18 Jul 26 | Tristan Calvin 5K Scholarship run | 5K | Spencer, IN |
| 1506 | 12 Sep 26 | Triquest Triathlon | other triathlon | Ludlow, VT |
| 1507 | 02 Aug 26 | TripleThreat Half Marathon | 5K/13.1M | Rockport, MA |
| 1508 | 13 Jun 26 | Triple Trail Challenge | 7K/13.1M | Park, UT |
| 1509 | 24 Oct 26 | Triple Lakes Trail Race | 13.1M/26.2M/40M | Greensboro, NC |
| 1510 | 30 Aug 26 | Triple Dam 10K | 10K | Perkinsville, VT |
| 1511 | 05 Dec 26 | Triple C at Woolly Hollow | 1M/4M | Greenbrier, AR |
| 1512 | 06 Jun 26 | Triple B Relay and Race | 1M/5M | Bennington, NE |
| 1513 | 30 May 26 | Trio Rio Triathlon | Sprint Triathlon/Sprint Triathlon Relay | Albuquerque, NM |
| 1514 | 14 Jun 26 | Trinona Triathlon and Duathlon | Olympic/Sprint Duathlon/Sprint Triathlon | Winona, MN |
| 1515 | 23 Jun 26 | Trinity Triumph 5K | 5K | New Lenox, IL |