| Porvoo to Busto Garolfo | 1,232.97 mi (1,984.28 km) |
| Porvoo to Cabras | 1,593.20 mi (2,564.01 km) |
| Porvoo to Cadelbosco di Sopra | 1,244.67 mi (2,003.10 km) |
| Porvoo to Cadoneghe | 1,175.03 mi (1,891.02 km) |
| Porvoo to Cagli | 1,283.52 mi (2,065.62 km) |
| Porvoo to Cagliari | 1,627.51 mi (2,619.23 km) |
| Porvoo to Cairo Montenotte | 1,317.34 mi (2,120.06 km) |
| Porvoo to Caivano | 1,427.92 mi (2,298.02 km) |
| Porvoo to Calcinaia | 1,312.79 mi (2,112.73 km) |
| Porvoo to Calcinato | 1,205.24 mi (1,939.65 km) |
| Porvoo to Calderara di Reno | 1,243.98 mi (2,001.99 km) |
| Porvoo to Caldogno | 1,174.22 mi (1,889.72 km) |
| Porvoo to Calenzano | 1,290.42 mi (2,076.73 km) |
| Porvoo to Calolziocorte | 1,205.31 mi (1,939.76 km) |
| Porvoo to Caltagirone | 1,673.16 mi (2,692.70 km) |
