| Porvoo to Calne | 1,223.87 mi (1,969.63 km) |
| Porvoo to Cam | 1,223.73 mi (1,969.40 km) |
| Porvoo to Camberley | 1,187.81 mi (1,911.59 km) |
| Porvoo to Camborne | 1,387.56 mi (2,233.06 km) |
| Porvoo to Cambridge | 1,120.52 mi (1,803.30 km) |
| Porvoo to Cambuslang | 1,122.95 mi (1,807.21 km) |
| Porvoo to Canford Cliffs | 1,255.52 mi (2,020.57 km) |
| Porvoo to Cannock | 1,169.49 mi (1,882.12 km) |
| Porvoo to Canterbury | 1,132.45 mi (1,822.51 km) |
| Porvoo to Carlisle | 1,113.49 mi (1,791.99 km) |
| Porvoo to Carlton Colville | 1,058.85 mi (1,704.06 km) |
| Porvoo to Carluke | 1,114.42 mi (1,793.49 km) |
| Porvoo to Carnoustie | 1,051.44 mi (1,692.13 km) |
| Porvoo to Carshalton | 1,168.02 mi (1,879.75 km) |
| Porvoo to Carterton | 1,195.85 mi (1,924.54 km) |
