| Idar-Oberstein to Calafell | 650.14 mi (1,046.30 km) |
| Idar-Oberstein to Calahorra | 677.62 mi (1,090.52 km) |
| Idar-Oberstein to Calasparra | 909.59 mi (1,463.84 km) |
| Idar-Oberstein to Calatayud | 720.90 mi (1,160.18 km) |
| Idar-Oberstein to Caldas de Montbuy | 610.60 mi (982.67 km) |
| Idar-Oberstein to Caldas de Reyes | 904.94 mi (1,456.36 km) |
| Idar-Oberstein to Calella | 602.34 mi (969.38 km) |
| Idar-Oberstein to Callosa de Segura | 897.29 mi (1,444.05 km) |
| Idar-Oberstein to Calpe | 844.24 mi (1,358.67 km) |
| Idar-Oberstein to Calvia | 739.38 mi (1,189.92 km) |
| Idar-Oberstein to Camas | 1,078.23 mi (1,735.24 km) |
| Idar-Oberstein to Cambados | 915.80 mi (1,473.84 km) |
| Idar-Oberstein to Cambre | 864.15 mi (1,390.71 km) |
| Idar-Oberstein to Cambrils | 669.43 mi (1,077.35 km) |
| Idar-Oberstein to Campo de Criptana | 876.42 mi (1,410.47 km) |
