| 12046 | 15 Feb 26 | 2026 Chilly Willy Duathlon | triathlon | St Petersburg, FL |
| 12047 | 21 Feb 26 | 2026 Chilly Cheeks Winter Duathlon & 4 Mile Run | triathlon | Englewood, CO |
| 12048 | 21 Mar 26 | 2026 Chickahominy Chase 5k/10k | 10K/5K | Williamsburg, VA |
| 12049 | 31 Jan 26 | 2026 Cherrylake Farm Races | triathlon | Groveland, FL |
| 12050 | 19 Sep 26 | 2026 Chelanathon | triathlon | Manson, WA |
| 12051 | 07 May 26 | 2026 Cerberus 3-Day Expedition Stage Race | triathlon | New Castle, VA |
| 12052 | 03 Oct 26 | 2026 Center of the Nation Series - Day 6 (MT) | 5K/10K | Baker, MT |
| 12053 | 02 Oct 26 | 2026 Center of the Nation Series - Day 5 (ND) | 5K/10K | Bowman, ND |
| 12054 | 01 Oct 26 | 2026 Center of the Nation Series - Day 4 (SD) | 5K/10K | Belle Fourche, SD |
| 12055 | 30 Sep 26 | 2026 Center of the Nation Series - Day 3 (NE) | 5K/10K | Chadron, NE |
| 12056 | 29 Sep 26 | 2026 Center of the Nation Series - Day 2 (CO) | 5K/10K | Sterling, CO |
| 12057 | 28 Sep 26 | 2026 Center of the Nation Series - Day 1 (WY) | 5K/10K | Cheyenne, WY |
| 12058 | 22 Mar 26 | 2026 Cedarville Charge 5k/10k | 10K/5K | Waldorf, MD |
| 12059 | 11 Apr 26 | 2026 Cedar Creek SPRING Duathlon | triathlon | Seaford, NY |
| 12060 | 12 Apr 26 | 2026 CaveMan Triathlon | triathlon | Flower Mound, TX |