| Portage to Cortona | 4,635.25 mi (7,459.71 km) |
| Portage to Cosenza | 4,979.67 mi (8,014.00 km) |
| Portage to Cossato | 4,389.77 mi (7,064.65 km) |
| Portage to Costa Volpino | 4,455.96 mi (7,171.17 km) |
| Portage to Creazzo | 4,522.22 mi (7,277.81 km) |
| Portage to Crema | 4,458.02 mi (7,174.49 km) |
| Portage to Cremona | 4,481.23 mi (7,211.85 km) |
| Portage to Crevalcore | 4,542.37 mi (7,310.24 km) |
| Portage to Crispiano | 4,961.07 mi (7,984.06 km) |
| Portage to Crosia | 4,988.70 mi (8,028.54 km) |
| Portage to Crotone | 5,024.66 mi (8,086.40 km) |
| Portage to Cuneo | 4,411.12 mi (7,099.02 km) |
| Portage to Cuorgne | 4,375.95 mi (7,042.41 km) |
| Portage to Cusano Milanino | 4,430.91 mi (7,130.86 km) |
| Portage to Cutro | 5,021.49 mi (8,081.30 km) |
