| Porvoo to Cosenza | 1,513.10 mi (2,435.10 km) |
| Porvoo to Cossato | 1,248.27 mi (2,008.90 km) |
| Porvoo to Costa Volpino | 1,188.86 mi (1,913.28 km) |
| Porvoo to Creazzo | 1,178.63 mi (1,896.83 km) |
| Porvoo to Crema | 1,226.52 mi (1,973.89 km) |
| Porvoo to Cremona | 1,233.50 mi (1,985.13 km) |
| Porvoo to Crevalcore | 1,236.78 mi (1,990.40 km) |
| Porvoo to Crispiano | 1,414.28 mi (2,276.07 km) |
| Porvoo to Crosia | 1,489.24 mi (2,396.70 km) |
| Porvoo to Crotone | 1,518.17 mi (2,443.26 km) |
| Porvoo to Cuneo | 1,334.59 mi (2,147.81 km) |
| Porvoo to Cuorgne | 1,271.05 mi (2,045.55 km) |
| Porvoo to Cusano Milanino | 1,226.20 mi (1,973.38 km) |
| Porvoo to Cutro | 1,523.01 mi (2,451.05 km) |
| Porvoo to Cutrofiano | 1,437.17 mi (2,312.91 km) |
