| Idar-Oberstein to Carpentras | 405.08 mi (651.91 km) |
| Idar-Oberstein to Carquefou | 435.94 mi (701.58 km) |
| Idar-Oberstein to Carqueiranne | 460.93 mi (741.79 km) |
| Idar-Oberstein to Carrieres-sous-Poissy | 243.24 mi (391.45 km) |
| Idar-Oberstein to Carrieres-sur-Seine | 232.93 mi (374.86 km) |
| Idar-Oberstein to Carros | 410.38 mi (660.44 km) |
| Idar-Oberstein to Carvin | 200.38 mi (322.49 km) |
| Idar-Oberstein to Castanet-Tolosan | 508.99 mi (819.14 km) |
| Idar-Oberstein to Castelginest | 500.17 mi (804.94 km) |
| Idar-Oberstein to Castelnau-le-Lez | 449.66 mi (723.66 km) |
| Idar-Oberstein to Castelnaudary | 509.65 mi (820.20 km) |
| Idar-Oberstein to Castelsarrasin | 489.00 mi (786.97 km) |
| Idar-Oberstein to Castres | 485.49 mi (781.31 km) |
| Idar-Oberstein to Caudebec-les-Elbeuf | 283.84 mi (456.79 km) |
| Idar-Oberstein to Caudry | 175.88 mi (283.05 km) |
