| South Portland to Carpentras | 3,613.89 mi (5,816.00 km) |
| South Portland to Carquefou | 3,233.20 mi (5,203.33 km) |
| South Portland to Carqueiranne | 3,690.52 mi (5,939.32 km) |
| South Portland to Carrieres-sous-Poissy | 3,340.30 mi (5,375.70 km) |
| South Portland to Carrieres-sur-Seine | 3,351.77 mi (5,394.15 km) |
| South Portland to Carros | 3,717.14 mi (5,982.15 km) |
| South Portland to Carvin | 3,337.91 mi (5,371.84 km) |
| South Portland to Castanet-Tolosan | 3,473.39 mi (5,589.87 km) |
| South Portland to Castelginest | 3,464.97 mi (5,576.33 km) |
| South Portland to Castelnau-le-Lez | 3,576.70 mi (5,756.14 km) |
| South Portland to Castelnaudary | 3,499.96 mi (5,632.64 km) |
| South Portland to Castelsarrasin | 3,439.82 mi (5,535.85 km) |
| South Portland to Castres | 3,504.38 mi (5,639.76 km) |
| South Portland to Caudebec-les-Elbeuf | 3,289.00 mi (5,293.14 km) |
| South Portland to Caudry | 3,366.03 mi (5,417.10 km) |
