| 10666 | 13 Feb 26 | 2026 Ultraman Florida | triathlon | Clermont, FL |
| 10667 | 20 Mar 26 | 2026 Ultraman Arizona | triathlon | Phoenix, AZ |
| 10668 | 01 Feb 26 | 2026 UCI Zot Trot Reverse Triathlon | triathlon | Irvine, CA |
| 10669 | 16 May 26 | 2026 Two Twisted Posts Winery 5k/10k | 10K/5K | Purcellville, VA |
| 10670 | 21 Mar 26 | 2026 Twisted Oak 4k/8k | 4k/8k | Boyce, VA |
| 10671 | 08 Aug 26 | 2026 Twin Lakes Triathlon | triathlon | Manson, IA |
| 10672 | 27 Jun 26 | 2026 Tupper Lake Tinman Triathlon | triathlon | Tupper Lake, NY |
| 10673 | 25 Apr 26 | 2026 Tupelo Sprint Triathlon | triathlon | Tupelo, MS |
| 10674 | 08 Mar 26 | 2026 Tucson Shamrock Half Marathon / 10K / 5K | 5K/10K | Tucson, AZ |
| 10675 | 01 Aug 26 | 2026 Try-A-Tri: Preston Nielson Memorial Triathlon Festival - SATURDAY ADULTS | triathlon | Blanding, UT |
| 10676 | 07 Feb 26 | 2026 Trojan Trot 5K & 1M Fun Run | 5K | Irvine, CA |
| 10677 | 28 Jun 26 | 2026 TriWaco Triathlon | triathlon | Waco, TX |
| 10678 | 11 Jul 26 | 2026 TriUtah Echo Triathlon | triathlon | Coalville, UT |
| 10679 | 08 Aug 26 | 2026 TriUtah East Canyon Triathlon | triathlon | Morgan, UT |
| 10680 | 31 May 26 | 2026 TriRidgefield Triathlon & Duathlon | triathlon | Ridgefield, CT |