| 16096 | 02 Aug 26 | Coca Strong 5K/10K Hope in Every Step | 5K/10K | Valley Cottage, NY |
| 16097 | 07 Jun 26 | Cobscook Bay Road Races | 1M/5K/10K | Pembroke, ME |
| 16098 | 13 Jun 26 | Cobra Den Trail Series | 5K/10K | Memphis, TN |
| 16099 | 16 May 26 | Cobra 5Kai, 10Kai & Half Miyagithon | 5K/10K/13.1M | Los Angeles, CA |
| 16100 | 13 Sep 26 | Cobblestone Arts Center Annual Run, Walk and Roll 5K | 5K | Victor, NY |
| 16101 | 03 Oct 26 | Cobb County 5K | 5K | Marietta, GA |
| 16102 | 19 Sep 26 | Coatesville VA Strides to Prevent Suicide 5K | 5K | Coatesville, PA |
| 16103 | 26 Sep 26 | Coastal Traverse Adventure Race | 12H adventure race | Lewes, DE |
| 16104 | 18 Jul 26 | Coastal Plains Relay | 75M | Richmond, TX |
| 16105 | 28 Nov 26 | Coastal Half Marathon & 5K | 1M/5K/13.1M | Orange Beach, AL |
| 16106 | 16 May 26 | Coastal Giants 5K, 10K, Half Marathon | 5K/10K/13.1M | Watsonville, CA |
| 16107 | 10 Apr 27 | Coastal Delaware Running Festival | 5K | Dewey Beach, DE |
| 16108 | 30 May 26 | Coastal Bend Stroke Run | 5K | Corpus Christi, TX |
| 16109 | 10 Oct 26 | Coastal Bend Blood Center Run for Blood 5K and 10K | 1K/5K/10K | Corpus Christi, TX |
| 16110 | 27 Mar 27 | Coast to Crest Trail Race | 5K/10K | Del Mar, CA |