| Idar-Oberstein to Campos del Puerto | 740.78 mi (1,192.17 km) |
| Idar-Oberstein to Canals | 837.98 mi (1,348.60 km) |
| Idar-Oberstein to Candelaria | 1,930.78 mi (3,107.29 km) |
| Idar-Oberstein to Canet de Mar | 605.48 mi (974.42 km) |
| Idar-Oberstein to Cangas | 925.31 mi (1,489.15 km) |
| Idar-Oberstein to Cangas de Narcea | 797.50 mi (1,283.45 km) |
| Idar-Oberstein to Canovellas | 609.38 mi (980.70 km) |
| Idar-Oberstein to Canteras | 933.15 mi (1,501.75 km) |
| Idar-Oberstein to Cantillana | 1,060.26 mi (1,706.32 km) |
| Idar-Oberstein to Capdepera | 717.22 mi (1,154.26 km) |
| Idar-Oberstein to Carballo | 881.07 mi (1,417.94 km) |
| Idar-Oberstein to Carcagente | 824.81 mi (1,327.40 km) |
| Idar-Oberstein to Cardedeu | 606.42 mi (975.93 km) |
| Idar-Oberstein to Carlet | 819.94 mi (1,319.56 km) |
| Idar-Oberstein to Carmona | 1,062.41 mi (1,709.79 km) |
