| Idar-Oberstein to Clay Cross | 444.67 mi (715.63 km) |
| Idar-Oberstein to Clayton | 480.58 mi (773.42 km) |
| Idar-Oberstein to Clayton le Moors | 500.26 mi (805.10 km) |
| Idar-Oberstein to Cleckheaton | 475.22 mi (764.79 km) |
| Idar-Oberstein to Cleethorpes | 411.23 mi (661.81 km) |
| Idar-Oberstein to Clevedon | 461.37 mi (742.51 km) |
| Idar-Oberstein to Clifton | 427.54 mi (688.06 km) |
| Idar-Oberstein to Clifton | 463.78 mi (746.38 km) |
| Idar-Oberstein to Cliftonville | 283.98 mi (457.03 km) |
| Idar-Oberstein to Clitheroe | 503.90 mi (810.95 km) |
| Idar-Oberstein to Clydebank | 648.24 mi (1,043.25 km) |
| Idar-Oberstein to Coalville | 429.14 mi (690.63 km) |
| Idar-Oberstein to Coatbridge | 635.10 mi (1,022.09 km) |
| Idar-Oberstein to Cobham | 356.97 mi (574.48 km) |
| Idar-Oberstein to Cockermouth | 565.97 mi (910.85 km) |
