| 376 | 31 May 25 | 2025 Cat Day 1M 5K 10K 13.1 26.2 - Benefits Alley Cat Allies | 10K/13.1/1M/26.2/5K/Triathlon/Ultra | Richmond, VA |
| 377 | 31 May 25 | 2025 Cat Day 1M 5K 10K 13.1 26.2 - Benefits Alley Cat Allies | 10K/13.1/1M/26.2/5K/Triathlon/Ultra | Seattle, WA |
| 378 | 31 May 25 | 2025 Cat Day 1M 5K 10K 13.1 26.2 - Benefits Alley Cat Allies | 10K/13.1/1M/26.2/5K/Triathlon/Ultra | Morgantown, WV |
| 379 | 31 May 25 | 2025 Cat Day 1M 5K 10K 13.1 26.2 - Benefits Alley Cat Allies | 10K/13.1/1M/26.2/5K/Triathlon/Ultra | Milwaukee, WI |
| 380 | 31 May 25 | 2025 Cat Day 1M 5K 10K 13.1 26.2 - Benefits Alley Cat Allies | 10K/13.1/1M/26.2/5K/Triathlon/Ultra | Casper, WY |
| 381 | 17 Aug 25 | 2025 Cazenovia Triathlon | triathlon | Cazenovia, NY |
| 382 | 08 Jun 25 | 2025 CB Kids Triathlon | triathlon | Warrington, PA |
| 383 | 04 Oct 25 | 2025 Cedar Creek Park Fall Duathlon | triathlon | Seaford, NY |
| 384 | 21 Jun 25 | 2025 Cedar Hill Kids & Family Triathlon | triathlon | Cedar Hill, TX |
| 385 | 27 Sep 25 | 2025 Cedar Mountain Rally 5k/10k | 10K/5K | Orange, VA |
| 386 | 11 May 25 | 2025 Cedar River Triathlon | triathlon | Maple Valley, WA |
| 387 | 29 Sep 25 | 2025 Center of the Nation Series - Day 1 (WY) | 5K/10K | Cheyenne, WY |
| 388 | 30 Sep 25 | 2025 Center of the Nation Series - Day 2 (CO) | 5K/10K | Sterling, CO |
| 389 | 01 Oct 25 | 2025 Center of the Nation Series - Day 3 (NE) | 5K/10K | Chadron, NE |
| 390 | 02 Oct 25 | 2025 Center of the Nation Series - Day 4 (SD) | 5K/10K | Belle Fourche, SD |