| South Portland to Gavardo | 3,795.68 mi (6,108.55 km) |
| South Portland to Gavirate | 3,714.11 mi (5,977.28 km) |
| South Portland to Gavorrano | 3,908.16 mi (6,289.57 km) |
| South Portland to Gela | 4,277.56 mi (6,884.07 km) |
| South Portland to Gemona del Friuli | 3,884.40 mi (6,251.33 km) |
| South Portland to Genoa | 3,771.16 mi (6,069.09 km) |
| South Portland to Genzano di Roma | 4,030.04 mi (6,485.73 km) |
| South Portland to Gessate | 3,754.39 mi (6,042.11 km) |
| South Portland to Ghedi | 3,795.23 mi (6,107.84 km) |
| South Portland to Giarre | 4,292.79 mi (6,908.58 km) |
| South Portland to Giaveno | 3,682.16 mi (5,925.86 km) |
| South Portland to Giffoni Valle Piana | 4,164.79 mi (6,702.58 km) |
| South Portland to Ginosa | 4,251.97 mi (6,842.88 km) |
| South Portland to Gioia del Colle | 4,248.08 mi (6,836.63 km) |
| South Portland to Gioia Tauro | 4,296.68 mi (6,914.84 km) |
