| 15001 | 19 Jul 25 | 2025 Tri Boulder Triathlon | triathlon | Boulder, CO |
| 15002 | 16 Aug 25 | 2025 Tri 4 Schools Middleton Kids Triathlon ~ Results . . | triathlon | Middleton, WI |
| 15003 | 28 Sep 25 | 2025 Treasure Island Triathlon, Duathlon, Aquabike, & Kayak Triathlon | triathlon | Point Pleasant, NJ |
| 15004 | 23 Nov 25 | 2025 Trail Blazer 10K - 5K | 5K/10K | Peoria, AZ |
| 15005 | 14 Sep 25 | 2025 Tradewind Triathlon | triathlon | Kaneohe Bay, HI |
| 15006 | 27 Jul 25 | 2025 Tour de Kirkwood Triathlon | triathlon | Kirkwood, MO |
| 15007 | 21 Sep 25 | 2025 TOUGHMAN Westchester Triathlon - (SUNDAY) | triathlon | Rye, NY |
| 15008 | 20 Sep 25 | 2025 TOUGHMAN Westchester Triathlon - (SATURDAY) | triathlon | Rye, NY |
| 15009 | 13 Sep 25 | 2025 Toughman Triathlon - Olympic Events . . | triathlon | Stoney Point, NY |
| 15010 | 09 Aug 25 | 2025 TOSA Youth Tri | triathlon | Wauwatosa, WI |
| 15011 | 02 Aug 25 | 2025 Top Gun Triathlon | triathlon | St Petersburg, FL |
| 15012 | 20 Sep 25 | 2025 Tobin Bolter / Ada County Kids Duathlon | triathlon | Garden, ID |
| 15013 | 23 Aug 25 | 2025 TOBAY Junior Triathlon - SATURDAY | triathlon | Oyster Bay, NY |
| 15014 | 02 Aug 25 | 2025 Titanium Man Junior Triathlon | triathlon | Richland, WA |
| 15015 | 13 Dec 25 | 2025 Tinsel Trot 5k/10k | 10K/5K | Louisa, VA |