| 2551 | 20 Jun 26 | Cedar Hill Kids and Family Triathlon | supersprint triathlon/youth triathlon | Cedar Hill, TX |
| 2552 | 26 Apr 26 | Cedar Park Run: Mile Challenge & 5K | 5K | Cedar Park, TX |
| 2553 | 01 Nov 26 | Cedar Park Run: Mile Challenge & 5K (Fall Edition) | 5K | Cedar Park, TX |
| 2554 | 26 Apr 26 | Cedar Park Run: Mile Challenge and 5K | 1M/5K | Cedar Park, TX |
| 2555 | 23 May 26 | Cedar Rapids Fire Department Memorial 5K | 5K | Cedar Rapids, IA |
| 2556 | 07 Jun 26 | Cedar Rapids Marathon Weekend | 5K/10K/13.1M/26.2M | Cedar Rapids, IA |
| 2557 | 25 Apr 26 | Cedar River Half | 5K/10K/13.1M | Maple Valley, WA |
| 2558 | 25 Apr 26 | Cedar River Half 13.1, 10k, 5k | Half Marathon | Maple Valley, WA |
| 2559 | 10 May 26 | Cedar River Triathlon | Sprint Triathlon | Maple Valley, WA |
| 2560 | 25 Apr 26 | Cedar Valley Arts Festival 5K/10K | 5K/10K | Cedartown, GA |
| 2561 | 25 Apr 26 | Cedar Valley Sports Plex Pump and Run 5K | 5K | Waterloo, IA |
| 2562 | 23 May 26 | Cedarburg Half Marathon | 5K/13.1M | Cedarburg, WI |
| 2563 | 18 Apr 26 | Cedro Peak | 25K/50K | Tijeras, NM |
| 2564 | 28 Mar 26 | CEEF/CUSD Run for Great Schools 5K | 5K | Cupertino, CA |
| 2565 | 02 May 26 | Celebrate a Nurse 5K | 5K | Reedsburg, WI |