| 11731 | 28 Mar 26 | 2026 Consider How the Wildflowers Grow 1M 5K 10K 13.1 26.2 | Virtual | Mobile, AL |
| 11732 | 16 Feb 26 | 2026 Commander-in-Chief Chase 5k/10k | 10K/5K | Spotsylvania, VA |
| 11733 | 14 Jun 26 | 2026 Columbia River Half Iron | triathlon | Vantage, WA |
| 11734 | 12 Apr 26 | 2026 Columbia Gateway Duathlon | triathlon | Columbia, MD |
| 11735 | 06 Jun 26 | 2026 Colorado Triathlon | triathlon | Boulder, CO |
| 11736 | 20 Jun 26 | 2026 Clemson Triathlon | triathlon | Seneca, SC |
| 11737 | 27 Mar 26 | 2026 CLASH Miami Triathlon - Sunday Events | triathlon | Homestead, FL |
| 11738 | 29 Mar 26 | 2026 CLASH Endurance Coastal Mississippi | triathlon | Gulfport, MS |
| 11739 | 02 May 26 | 2026 Citrus Kids Triathlon - Bicentennial Park | triathlon | Crystal River, FL |
| 11740 | 09 May 26 | 2026 Cinco de Miler | 1M | Chicago, IL |
| 11741 | 26 Jul 26 | 2026 Chisago Lakes Triathlon - Sunday | triathlon | Chisago, MN |
| 11742 | 15 Feb 26 | 2026 Chilly Willy Duathlon | triathlon | St Petersburg, FL |
| 11743 | 21 Feb 26 | 2026 Chilly Cheeks Winter Duathlon & 4 Mile Run | triathlon | Englewood, CO |
| 11744 | 21 Mar 26 | 2026 Chickahominy Chase 5k/10k | 10K/5K | Williamsburg, VA |
| 11745 | 31 Jan 26 | 2026 Cherrylake Farm Races | triathlon | Groveland, FL |