| 10021 | 06 Jun 26 | Tom's Try-athlon Oak Brook Park District | youth triathlon | Oak Brook, IL |
| 10022 | 18 Apr 26 | Tombstone Desert Donkey Dash | 3M/13M | Tombstone, AZ |
| 10023 | 19 Apr 26 | Tommy Sullivan's 5K | 5K | Branford, CT |
| 10024 | 31 May 26 | Tomorrow River Trail Half-Marathon | 13.1M | Plover, WI |
| 10025 | 06 May 26 | Tonka Trail Trot | kids run | Minnetonka, MN |
| 10026 | 16 May 26 | Tonka Youth Triathlon | youth triathlon | Minnetonka, MN |
| 10027 | 12 Sep 26 | Too Hot To Handle 5K, 10K & Half | ['5K'/ '10K'/ 'Half Marathon'] | Dallas, TX |
| 10028 | 01 Aug 26 | Top Gun Triathlon | Sprint Duathlon/Sprint Triathlon | Saint Petersburg, FL |
| 10029 | 23 May 26 | Top of Michigan Festival of Races | 5K/10K/13.1M | Petoskey, MI |
| 10030 | 13 Jun 26 | Top of Zion National Parks Relay | 26.2M/195M | Torrey, UT |
| 10031 | 19 Apr 26 | Top Pot Doughnut Dash 5K | 5K | Seattle, WA |
| 10032 | 02 May 26 | TopCity Half Marathon | 5K/13.1M | Topeka, KS |
| 10033 | 04 Jul 26 | Topeka Road Run | 1M/5K | Topeka, IN |
| 10034 | 25 Apr 26 | Torch Run - Community 5K and Fun Run | 1M/5K | Mount Olive, AL |
| 10035 | 30 May 26 | Tori Rose Foundation Warrior Race 5K Run For The Roses | 5K | Jensen Beach, FL |