| South Portland to Civril | 4,892.25 mi (7,873.32 km) |
| South Portland to Cizre | 5,427.64 mi (8,734.95 km) |
| South Portland to Cobanlar | 4,916.55 mi (7,912.43 km) |
| South Portland to Corlu | 4,686.60 mi (7,542.35 km) |
| South Portland to Corum | 4,995.97 mi (8,040.24 km) |
| South Portland to Cukurca | 5,485.09 mi (8,827.41 km) |
| South Portland to Cukurcayir | 5,155.59 mi (8,297.13 km) |
| South Portland to Cumayeri | 4,824.58 mi (7,764.41 km) |
| South Portland to Cumra | 5,049.08 mi (8,125.71 km) |
| South Portland to Cungus | 5,274.10 mi (8,487.84 km) |
| South Portland to Dargecit | 5,399.43 mi (8,689.55 km) |
| South Portland to Davutlar | 4,816.91 mi (7,752.06 km) |
| South Portland to Demirozu | 5,200.88 mi (8,370.00 km) |
| South Portland to Demre | 4,996.04 mi (8,040.35 km) |
| South Portland to Denizciler | 5,230.78 mi (8,418.13 km) |
