| 16006 | 04 Oct 25 | 2025 Castle Creek Triathlon | triathlon | Morristown, AZ |
| 16007 | 09 Aug 25 | 2025 Cassadaga Kids Triathlon | triathlon | Cassadaga, NY |
| 16008 | 21 Sep 25 | 2025 Carlyle Lake Triathlon | triathlon | Carlyle Township, IL |
| 16009 | 20 Sep 25 | 2025 Carderock Charge 5k/10k/Half | 10K/13.1/5K | Potomac, MD |
| 16010 | 28 Sep 25 | 2025 Captiva Island Triathlon | triathlon | Captiva Island, FL |
| 16011 | 07 Sep 25 | 2025 Captain Kids Triathlon . . | triathlon | Galveston, TX |
| 16012 | 23 Aug 25 | 2025 Capital City Kids Triathlon | triathlon | Lansing, MI |
| 16013 | 20 Dec 25 | 2025 Candy Cane 5k/10k | 10K/5K | Alexandria, VA |
| 16014 | 20 Jul 25 | 2025 Cal Tri Williamsburg | triathlon | Williamsburg, VA |
| 16015 | 17 Aug 25 | 2025 Cal Tri Walnut Creek | triathlon | North Garden, VA |
| 16016 | 02 Nov 25 | 2025 Cal Tri Newport Dunes . . | triathlon | Newport Beach, CA |
| 16017 | 19 Oct 25 | 2025 Cal Tri LA | triathlon | Playa del Rey, CA |
| 16018 | 14 Sep 25 | 2025 Cal Tri Fort Worth | triathlon | Fort Worth, TX |
| 16019 | 31 Aug 25 | 2025 Cal Tri Charlottesville | triathlon | Charlottesville, VA |
| 16020 | 11 Oct 25 | 2025 Cal Tri Charlotte | triathlon | Statesville, NC |