| 151 | 17 May 26 | 2026 Cal Tri Richmond | triathlon | Spotsylvania Courthouse, VA |
| 152 | 03 May 26 | 2026 Cal Tri Ventura ~ Results | triathlon | Ventura, CA |
| 153 | 19 Jul 26 | 2026 Cal Tri Williamsburg | triathlon | Williamsburg, VA |
| 154 | 08 Mar 26 | 2026 Cape Cod Indoor Triathlon | triathlon | Barnstable, MA |
| 155 | 31 May 26 | 2026 Capitol City Chase 5k/10k/Half | 10K/13.1/5K | Washington, DC |
| 156 | 02 May 26 | 2026 Carderock 5k/10k/Half | 10K/13.1/5K | Potomac, MD |
| 157 | 12 Apr 26 | 2026 Care Packages at Carderock 5k/10k/Half | 10K/13.1/5K | Potomac, MD |
| 158 | 16 Jan 26 | 2026 Carlsbad Marathon, Half Marathon & 5K | triathlon | Carlsbad, CA |
| 159 | 03 Oct 26 | 2026 Castle Creek Triathlon | triathlon | Morristown, AZ |
| 160 | 12 Apr 26 | 2026 CaveMan Triathlon | triathlon | Flower Mound, TX |
| 161 | 10 Jan 26 | 2026 CCP / Mount Pleasant Off Road Duathlon | triathlon | Mount Pleasant, SC |
| 162 | 11 Apr 26 | 2026 Cedar Creek SPRING Duathlon | triathlon | Seaford, NY |
| 163 | 22 Mar 26 | 2026 Cedarville Charge 5k/10k | 10K/5K | Waldorf, MD |
| 164 | 28 Sep 26 | 2026 Center of the Nation Series - Day 1 (WY) | 5K/10K | Cheyenne, WY |
| 165 | 29 Sep 26 | 2026 Center of the Nation Series - Day 2 (CO) | 5K/10K | Sterling, CO |