| South Portland to Coswig | 3,673.59 mi (5,912.07 km) |
| South Portland to Cottbus | 3,749.86 mi (6,034.82 km) |
| South Portland to Crailsheim | 3,665.38 mi (5,898.85 km) |
| South Portland to Cremlingen | 3,594.53 mi (5,784.83 km) |
| South Portland to Crimmitschau | 3,704.75 mi (5,962.22 km) |
| South Portland to Cuxhaven | 3,475.17 mi (5,592.74 km) |
| South Portland to Dachau | 3,748.39 mi (6,032.45 km) |
| South Portland to Dallgow-Doberitz | 3,677.20 mi (5,917.88 km) |
| South Portland to Damme | 3,492.34 mi (5,620.37 km) |
| South Portland to Darmstadt | 3,585.83 mi (5,770.83 km) |
| South Portland to Dassel | 3,570.25 mi (5,745.77 km) |
| South Portland to Datteln | 3,482.69 mi (5,604.85 km) |
| South Portland to Dautphe | 3,552.82 mi (5,717.71 km) |
| South Portland to Deggendorf | 3,791.37 mi (6,101.63 km) |
| South Portland to Delbruck | 3,527.55 mi (5,677.05 km) |
