| Idil to Clay Cross | 2,325.88 mi (3,743.14 km) |
| Idil to Clayton | 2,349.93 mi (3,781.84 km) |
| Idil to Clayton le Moors | 2,372.73 mi (3,818.55 km) |
| Idil to Cleckheaton | 2,345.39 mi (3,774.54 km) |
| Idil to Cleethorpes | 2,274.89 mi (3,661.09 km) |
| Idil to Clevedon | 2,368.72 mi (3,812.09 km) |
| Idil to Clifton | 2,313.04 mi (3,722.48 km) |
| Idil to Clifton | 2,323.93 mi (3,740.00 km) |
| Idil to Cliftonville | 2,186.69 mi (3,519.14 km) |
| Idil to Clitheroe | 2,374.23 mi (3,820.96 km) |
| Idil to Clydebank | 2,479.08 mi (3,989.70 km) |
| Idil to Coalville | 2,318.79 mi (3,731.73 km) |
| Idil to Coatbridge | 2,464.36 mi (3,966.01 km) |
| Idil to Cobham | 2,263.21 mi (3,642.29 km) |
| Idil to Cockermouth | 2,422.69 mi (3,898.95 km) |
