| 181 | 14 Sep 25 | 2025 Cal Tri Fort Worth | triathlon | Fort Worth, TX |
| 182 | 19 Oct 25 | 2025 Cal Tri LA | triathlon | Playa del Rey, CA |
| 183 | 02 Nov 25 | 2025 Cal Tri Newport Dunes . . | triathlon | Newport Beach, CA |
| 184 | 17 Aug 25 | 2025 Cal Tri Walnut Creek | triathlon | North Garden, VA |
| 185 | 23 Aug 25 | 2025 Callaway Gardens Olympic Triathlon & Duathlon | triathlon | Pine Mountain, GA |
| 186 | 19 Oct 25 | 2025 CalTri Bearathlon | triathlon | Berkeley, CA |
| 187 | 09 Aug 25 | 2025 Camp Michawana Mini Triathlon #2 | triathlon | Hastings, MI |
| 188 | 20 Dec 25 | 2025 Candy Cane 5k/10k | 10K/5K | Alexandria, VA |
| 189 | 23 Aug 25 | 2025 Capital City Kids Triathlon | triathlon | Lansing, MI |
| 190 | 07 Sep 25 | 2025 Captain Kids Triathlon . . | triathlon | Galveston, TX |
| 191 | 28 Sep 25 | 2025 Captiva Island Triathlon | triathlon | Captiva Island, FL |
| 192 | 20 Sep 25 | 2025 Carderock Charge 5k/10k/Half | 10K/13.1/5K | Potomac, MD |
| 193 | 21 Sep 25 | 2025 Carlyle Lake Triathlon | triathlon | Carlyle Township, IL |
| 194 | 09 Aug 25 | 2025 Cassadaga Kids Triathlon | triathlon | Cassadaga, NY |
| 195 | 04 Oct 25 | 2025 Castle Creek Triathlon | triathlon | Morristown, AZ |