| South Portland to Carterton | 3,122.69 mi (5,025.49 km) |
| South Portland to Castle Bromwich | 3,099.14 mi (4,987.58 km) |
| South Portland to Castleford | 3,091.96 mi (4,976.03 km) |
| South Portland to Castleton | 3,062.22 mi (4,928.16 km) |
| South Portland to Caterham | 3,194.76 mi (5,141.47 km) |
| South Portland to Catford | 3,193.46 mi (5,139.37 km) |
| South Portland to Caversham | 3,154.21 mi (5,076.21 km) |
| South Portland to Chaddesden | 3,104.35 mi (4,995.96 km) |
| South Portland to Chalfont Saint Peter | 3,168.05 mi (5,098.49 km) |
| South Portland to Chandlers Ford | 3,148.36 mi (5,066.80 km) |
| South Portland to Chapel en le Frith | 3,077.54 mi (4,952.82 km) |
| South Portland to Chapeltown | 3,092.61 mi (4,977.07 km) |
| South Portland to Chard | 3,085.60 mi (4,965.79 km) |
| South Portland to Charlton Kings | 3,101.64 mi (4,991.61 km) |
| South Portland to Chatham | 3,217.16 mi (5,177.51 km) |
