| Porvoo to Clay Cross | 1,129.32 mi (1,817.47 km) |
| Porvoo to Clayton | 1,117.53 mi (1,798.48 km) |
| Porvoo to Clayton le Moors | 1,136.88 mi (1,829.64 km) |
| Porvoo to Cleckheaton | 1,116.64 mi (1,797.06 km) |
| Porvoo to Cleethorpes | 1,067.24 mi (1,717.56 km) |
| Porvoo to Clevedon | 1,251.53 mi (2,014.14 km) |
| Porvoo to Clifton | 1,132.43 mi (1,822.46 km) |
| Porvoo to Clifton | 1,086.11 mi (1,747.93 km) |
| Porvoo to Cliftonville | 1,117.13 mi (1,797.84 km) |
| Porvoo to Clitheroe | 1,133.35 mi (1,823.95 km) |
| Porvoo to Clydebank | 1,128.25 mi (1,815.75 km) |
| Porvoo to Coalville | 1,146.40 mi (1,844.95 km) |
| Porvoo to Coatbridge | 1,116.72 mi (1,797.19 km) |
| Porvoo to Cobham | 1,177.42 mi (1,894.87 km) |
| Porvoo to Cockermouth | 1,136.01 mi (1,828.24 km) |
