Races
| Race | Dist | Terrain | Club | Actions |
|---|---|---|---|---|
| Colchester Zoo Stampede 10K | 10K | Road | ||
| Coillte 10K | 10K | Road | ||
| Coalville 10k | 10K | Mixed | ||
| Clwydian Hills Fell Race | 14.5K | Fell | ||
| Clumber 10K | 10K | Trail | ||
| Clowne Half | HM | Road | ||
| Cloud Trail 20 | 20M | Trail | Ivanhoe Runners | |
| Cloud 9 Fell Race | 9M | Fell | ||
| Chirk Half Marathon | HM | Road | ||
| Chicago Marathon | M | Road |