| Forest Hill to Clacton-on-Sea | 4,811.78 mi (7,743.81 km) |
| Forest Hill to Clay Cross | 4,673.32 mi (7,520.98 km) |
| Forest Hill to Clayton | 4,640.42 mi (7,468.03 km) |
| Forest Hill to Clayton le Moors | 4,619.40 mi (7,434.21 km) |
| Forest Hill to Cleckheaton | 4,645.57 mi (7,476.32 km) |
| Forest Hill to Cleethorpes | 4,713.50 mi (7,585.65 km) |
| Forest Hill to Clevedon | 4,668.35 mi (7,512.98 km) |
| Forest Hill to Clifton | 4,689.83 mi (7,547.55 km) |
| Forest Hill to Clifton | 4,661.37 mi (7,501.75 km) |
| Forest Hill to Cliftonville | 4,834.51 mi (7,780.39 km) |
| Forest Hill to Clitheroe | 4,616.40 mi (7,429.38 km) |
| Forest Hill to Clydebank | 4,488.13 mi (7,222.95 km) |
| Forest Hill to Coalville | 4,687.90 mi (7,544.45 km) |
| Forest Hill to Coatbridge | 4,502.53 mi (7,246.12 km) |
| Forest Hill to Cobham | 4,766.68 mi (7,671.23 km) |
