| Idar-Oberstein to Cankova | 450.56 mi (725.10 km) |
| Idar-Oberstein to Celje | 439.01 mi (706.52 km) |
| Idar-Oberstein to Cerklje na Gorenjskem | 408.71 mi (657.75 km) |
| Idar-Oberstein to Cerknica | 424.27 mi (682.79 km) |
| Idar-Oberstein to Cerkno | 395.87 mi (637.09 km) |
| Idar-Oberstein to Cerkvenjak | 452.99 mi (729.02 km) |
| Idar-Oberstein to Cirkulane | 463.32 mi (745.64 km) |
| Idar-Oberstein to Crensovci | 466.91 mi (751.42 km) |
| Idar-Oberstein to Crna na Koroskem | 413.37 mi (665.26 km) |
| Idar-Oberstein to Crnomelj | 464.62 mi (747.74 km) |
| Idar-Oberstein to Destrnik | 453.18 mi (729.32 km) |
| Idar-Oberstein to Divaca | 416.06 mi (669.59 km) |
| Idar-Oberstein to Dobje | 447.95 mi (720.91 km) |
| Idar-Oberstein to Dobrna | 433.40 mi (697.50 km) |
| Idar-Oberstein to Dobrova | 414.63 mi (667.27 km) |
