| Olean to Cortona | 4,346.35 mi (6,994.77 km) |
| Olean to Cosenza | 4,685.53 mi (7,540.63 km) |
| Olean to Cossato | 4,102.55 mi (6,602.42 km) |
| Olean to Costa Volpino | 4,173.10 mi (6,715.95 km) |
| Olean to Creazzo | 4,240.69 mi (6,824.73 km) |
| Olean to Crema | 4,172.66 mi (6,715.24 km) |
| Olean to Cremona | 4,195.61 mi (6,752.18 km) |
| Olean to Crevalcore | 4,257.18 mi (6,851.27 km) |
| Olean to Crispiano | 4,673.09 mi (7,520.61 km) |
| Olean to Crosia | 4,696.44 mi (7,558.18 km) |
| Olean to Crotone | 4,731.55 mi (7,614.69 km) |
| Olean to Cuneo | 4,118.41 mi (6,627.95 km) |
| Olean to Cuorgne | 4,087.18 mi (6,577.68 km) |
| Olean to Cusano Milanino | 4,145.37 mi (6,671.33 km) |
| Olean to Cutro | 4,727.95 mi (7,608.90 km) |
