| Idar-Oberstein to Cabestany | 528.61 mi (850.71 km) |
| Idar-Oberstein to Cabries | 442.82 mi (712.65 km) |
| Idar-Oberstein to Cachan | 233.41 mi (375.64 km) |
| Idar-Oberstein to Caen | 346.94 mi (558.34 km) |
| Idar-Oberstein to Cagnes-sur-Mer | 417.88 mi (672.51 km) |
| Idar-Oberstein to Cahors | 456.45 mi (734.59 km) |
| Idar-Oberstein to Calais | 255.32 mi (410.90 km) |
| Idar-Oberstein to Caluire-et-Cuire | 293.78 mi (472.80 km) |
| Idar-Oberstein to Cambrai | 184.11 mi (296.29 km) |
| Idar-Oberstein to Canet-en-Roussillon | 525.80 mi (846.19 km) |
| Idar-Oberstein to Cannes | 425.86 mi (685.35 km) |
| Idar-Oberstein to Canteleu | 281.69 mi (453.33 km) |
| Idar-Oberstein to Capbreton | 588.95 mi (947.82 km) |
| Idar-Oberstein to Carcassonne | 507.25 mi (816.34 km) |
| Idar-Oberstein to Carmaux | 460.53 mi (741.15 km) |
