| Porvoo to Coin | 2,112.73 mi (3,400.11 km) |
| Porvoo to Colindres | 1,683.15 mi (2,708.77 km) |
| Porvoo to Collado-Villalba | 1,857.29 mi (2,989.01 km) |
| Porvoo to Colmenar Viejo | 1,848.93 mi (2,975.57 km) |
| Porvoo to Colmenarejo | 1,861.74 mi (2,996.19 km) |
| Porvoo to Conil de la Frontera | 2,173.41 mi (3,497.77 km) |
| Porvoo to Consuegra | 1,914.64 mi (3,081.32 km) |
| Porvoo to Corbera de Llobregat | 1,650.72 mi (2,656.57 km) |
| Porvoo to Cordoba | 2,040.66 mi (3,284.12 km) |
| Porvoo to Coria del Rio | 2,111.83 mi (3,398.67 km) |
| Porvoo to Crevillente | 1,912.58 mi (3,078.00 km) |
| Porvoo to Cuarte de Huerva | 1,715.85 mi (2,761.39 km) |
| Porvoo to Cubellas | 1,669.74 mi (2,687.19 km) |
| Porvoo to Cuellar | 1,821.66 mi (2,931.68 km) |
| Porvoo to Cuenca | 1,838.88 mi (2,959.39 km) |
