| Porvoo to Castelfiorentino | 1,311.27 mi (2,110.29 km) |
| Porvoo to Castelfranco di Sopra | 1,298.53 mi (2,089.78 km) |
| Porvoo to Castelfranco di Sotto | 1,309.11 mi (2,106.82 km) |
| Porvoo to Castelfranco Emilia | 1,246.29 mi (2,005.71 km) |
| Porvoo to Castelfranco Veneto | 1,161.32 mi (1,868.97 km) |
| Porvoo to Castellabate | 1,463.57 mi (2,355.38 km) |
| Porvoo to Castellammare del Golfo | 1,642.92 mi (2,644.02 km) |
| Porvoo to Castellammare di Stabia | 1,442.33 mi (2,321.20 km) |
| Porvoo to Castellamonte | 1,270.05 mi (2,043.95 km) |
| Porvoo to Castellana Grotte | 1,395.87 mi (2,246.44 km) |
| Porvoo to Castellaneta | 1,415.35 mi (2,277.78 km) |
| Porvoo to Castellanza | 1,228.46 mi (1,977.02 km) |
| Porvoo to Castellarano | 1,253.56 mi (2,017.40 km) |
| Porvoo to Castelleone | 1,229.23 mi (1,978.25 km) |
| Porvoo to Castelletto sopra Ticino | 1,228.42 mi (1,976.95 km) |
