| South Portland to Gladenbach | 3,556.73 mi (5,724.00 km) |
| South Portland to Glauchau | 3,710.69 mi (5,971.78 km) |
| South Portland to Glinde | 3,540.91 mi (5,698.55 km) |
| South Portland to Gluckstadt | 3,504.37 mi (5,639.74 km) |
| South Portland to Gnarrenburg | 3,499.63 mi (5,632.11 km) |
| South Portland to Goch | 3,435.37 mi (5,528.69 km) |
| South Portland to Goldbach | 3,603.75 mi (5,799.67 km) |
| South Portland to Goldenstedt | 3,493.58 mi (5,622.37 km) |
| South Portland to Gomaringen | 3,647.13 mi (5,869.48 km) |
| South Portland to Gommern | 3,645.08 mi (5,866.20 km) |
| South Portland to Goppingen | 3,661.90 mi (5,893.26 km) |
| South Portland to Gorlitz | 3,794.31 mi (6,106.36 km) |
| South Portland to Goslar | 3,595.87 mi (5,787.00 km) |
| South Portland to Gotha | 3,635.56 mi (5,850.86 km) |
| South Portland to Gottingen | 3,587.62 mi (5,773.71 km) |
