| Os to Castrovillari | 1,483.99 mi (2,388.24 km) |
| Os to Catania | 1,626.04 mi (2,616.86 km) |
| Os to Catanzaro | 1,550.66 mi (2,495.55 km) |
| Os to Cattolica | 1,163.27 mi (1,872.10 km) |
| Os to Cava de' Tirreni | 1,405.70 mi (2,262.26 km) |
| Os to Cavallino | 1,479.97 mi (2,381.78 km) |
| Os to Cavarzere | 1,077.41 mi (1,733.92 km) |
| Os to Cave | 1,310.69 mi (2,109.36 km) |
| Os to Cavriago | 1,092.94 mi (1,758.92 km) |
| Os to Cavriglia | 1,181.49 mi (1,901.42 km) |
| Os to Cazzago San Martino | 1,028.90 mi (1,655.85 km) |
| Os to Ceccano | 1,331.78 mi (2,143.29 km) |
| Os to Cecina | 1,187.25 mi (1,910.70 km) |
| Os to Cefalu | 1,578.27 mi (2,539.97 km) |
| Os to Ceglie Messapico | 1,447.13 mi (2,328.93 km) |
