| Olen to Catania | 1,068.01 mi (1,718.80 km) |
| Olen to Catanzaro | 1,019.82 mi (1,641.24 km) |
| Olen to Cattolica | 616.86 mi (992.74 km) |
| Olen to Cava de' Tirreni | 861.70 mi (1,386.78 km) |
| Olen to Cavallino | 984.21 mi (1,583.94 km) |
| Olen to Cavarzere | 532.17 mi (856.44 km) |
| Olen to Cave | 749.80 mi (1,206.69 km) |
| Olen to Cavriago | 517.18 mi (832.32 km) |
| Olen to Cavriglia | 611.50 mi (984.12 km) |
| Olen to Cazzago San Martino | 451.92 mi (727.30 km) |
| Olen to Ceccano | 774.77 mi (1,246.87 km) |
| Olen to Cecina | 602.56 mi (969.73 km) |
| Olen to Cefalu | 1,010.48 mi (1,626.20 km) |
| Olen to Ceglie Messapico | 944.01 mi (1,519.24 km) |
| Olen to Celano | 749.13 mi (1,205.62 km) |
