| Idar-Oberstein to Crosby | 514.33 mi (827.73 km) |
| Idar-Oberstein to Crowborough | 328.46 mi (528.61 km) |
| Idar-Oberstein to Croxley Green | 364.82 mi (587.12 km) |
| Idar-Oberstein to Croydon | 345.38 mi (555.83 km) |
| Idar-Oberstein to Cudworth | 459.29 mi (739.15 km) |
| Idar-Oberstein to Culcheth | 494.42 mi (795.70 km) |
| Idar-Oberstein to Cullercoats | 520.15 mi (837.10 km) |
| Idar-Oberstein to Cumbernauld | 637.57 mi (1,026.07 km) |
| Idar-Oberstein to Cumnock | 626.00 mi (1,007.45 km) |
| Idar-Oberstein to Cupar | 625.31 mi (1,006.34 km) |
| Idar-Oberstein to Cwmbran | 471.42 mi (758.68 km) |
| Idar-Oberstein to Dagenham | 338.57 mi (544.87 km) |
| Idar-Oberstein to Dalkeith | 607.29 mi (977.34 km) |
| Idar-Oberstein to Darfield | 456.64 mi (734.89 km) |
| Idar-Oberstein to Darlaston | 450.79 mi (725.47 km) |
