| Idar-Oberstein to Campogalliano | 384.94 mi (619.50 km) |
| Idar-Oberstein to Campolongo Maggiore | 374.47 mi (602.66 km) |
| Idar-Oberstein to Camponogara | 372.09 mi (598.82 km) |
| Idar-Oberstein to Camposampiero | 358.00 mi (576.15 km) |
| Idar-Oberstein to Canegrate | 296.12 mi (476.56 km) |
| Idar-Oberstein to Canelli | 347.86 mi (559.83 km) |
| Idar-Oberstein to Canicatti | 912.74 mi (1,468.92 km) |
| Idar-Oberstein to Canosa di Puglia | 723.11 mi (1,163.74 km) |
| Idar-Oberstein to Cantu | 287.56 mi (462.79 km) |
| Idar-Oberstein to Caorle | 384.37 mi (618.58 km) |
| Idar-Oberstein to Capaci | 849.63 mi (1,367.35 km) |
| Idar-Oberstein to Capannori | 433.15 mi (697.08 km) |
| Idar-Oberstein to Capena | 579.96 mi (933.35 km) |
| Idar-Oberstein to Capo d'Orlando | 878.97 mi (1,414.56 km) |
| Idar-Oberstein to Capodrise | 687.13 mi (1,105.82 km) |
