| Porvoo to Cologno al Serio | 1,212.77 mi (1,951.77 km) |
| Porvoo to Cologno Monzese | 1,225.41 mi (1,972.10 km) |
| Porvoo to Colorno | 1,238.66 mi (1,993.44 km) |
| Porvoo to Comacchio | 1,217.97 mi (1,960.13 km) |
| Porvoo to Comiso | 1,691.38 mi (2,722.01 km) |
| Porvoo to Como | 1,212.44 mi (1,951.23 km) |
| Porvoo to Concordia Sagittaria | 1,137.46 mi (1,830.57 km) |
| Porvoo to Concorezzo | 1,220.38 mi (1,964.01 km) |
| Porvoo to Conegliano | 1,140.33 mi (1,835.18 km) |
| Porvoo to Conselice | 1,236.25 mi (1,989.56 km) |
| Porvoo to Conselve | 1,190.04 mi (1,915.19 km) |
| Porvoo to Conversano | 1,390.79 mi (2,238.27 km) |
| Porvoo to Copertino | 1,428.43 mi (2,298.84 km) |
| Porvoo to Copparo | 1,211.85 mi (1,950.28 km) |
| Porvoo to Corato | 1,386.76 mi (2,231.77 km) |
