| 256 | 21 Jun 25 | 2025 Cedar Hill Kids & Family Triathlon | triathlon | Cedar Hill, TX |
| 257 | 10 Jul 25 | 2025 Cedar Lake Triathlon #3 | triathlon | Chester, CT |
| 258 | 27 Sep 25 | 2025 Cedar Mountain Rally 5k/10k | 10K/5K | Orange, VA |
| 259 | 29 Sep 25 | 2025 Center of the Nation Series - Day 1 (WY) | 5K/10K | Cheyenne, WY |
| 260 | 30 Sep 25 | 2025 Center of the Nation Series - Day 2 (CO) | 5K/10K | Sterling, CO |
| 261 | 01 Oct 25 | 2025 Center of the Nation Series - Day 3 (NE) | 5K/10K | Chadron, NE |
| 262 | 02 Oct 25 | 2025 Center of the Nation Series - Day 4 (SD) | 5K/10K | Belle Fourche, SD |
| 263 | 03 Oct 25 | 2025 Center of the Nation Series - Day 5 (ND) | 5K/10K | Bowman, ND |
| 264 | 04 Oct 25 | 2025 Center of the Nation Series - Day 6 (MT) | 5K/10K | Baker, MT |
| 265 | 19 Jul 25 | 2025 Cereal City Triathlon & Duathlon | triathlon | Battle Creek, MI |
| 266 | 05 Oct 25 | 2025 CFH Affordable Housing 5k | 5K | Lorton, VA |
| 267 | 19 Jul 25 | 2025 Challenge New Jersey State Triathlon - Sprint Saturday | triathlon | West Windsor, NJ |
| 268 | 11 Aug 25 | 2025 Chamber Masters 5k | 5K | Haymarket, VA |
| 269 | 19 Jul 25 | 2025 Charles M. Schulz-Sonoma County Airport Napa to Sonoma Wine Country Half Marathon & Rosé 5K | 5K | Napa, CA |
| 270 | 12 Jul 25 | 2025 Chattahoochee Challenge Sprint Triathlon | triathlon | Columbus, GA |