| Porvoo to Cassino | 1,398.38 mi (2,250.48 km) |
| Porvoo to Castagneto Carducci | 1,345.99 mi (2,166.17 km) |
| Porvoo to Castano Primo | 1,235.55 mi (1,988.42 km) |
| Porvoo to Castel Bolognese | 1,249.65 mi (2,011.11 km) |
| Porvoo to Castel Gandolfo | 1,400.88 mi (2,254.49 km) |
| Porvoo to Castel Goffredo | 1,213.95 mi (1,953.67 km) |
| Porvoo to Castel Maggiore | 1,242.03 mi (1,998.85 km) |
| Porvoo to Castel Mella | 1,208.23 mi (1,944.47 km) |
| Porvoo to Castel San Giorgio | 1,433.36 mi (2,306.77 km) |
| Porvoo to Castel San Giovanni | 1,251.53 mi (2,014.14 km) |
| Porvoo to Castel San Pietro Terme | 1,248.45 mi (2,009.19 km) |
| Porvoo to Castel Volturno | 1,426.90 mi (2,296.37 km) |
| Porvoo to Castelbuono | 1,631.92 mi (2,626.31 km) |
| Porvoo to Casteldaccia | 1,631.93 mi (2,626.33 km) |
| Porvoo to Castelfidardo | 1,273.89 mi (2,050.13 km) |
