| South Portland to Fuente-Alamo de Murcia | 3,538.04 mi (5,693.92 km) |
| South Portland to Galapagar | 3,312.34 mi (5,330.70 km) |
| South Portland to Galdacano | 3,285.61 mi (5,287.68 km) |
| South Portland to Gandia | 3,543.58 mi (5,702.84 km) |
| South Portland to Garrucha | 3,527.07 mi (5,676.28 km) |
| South Portland to Gava | 3,566.78 mi (5,740.18 km) |
| South Portland to Gelves | 3,321.02 mi (5,344.66 km) |
| South Portland to Getafe | 3,333.54 mi (5,364.82 km) |
| South Portland to Gibraleon | 3,273.70 mi (5,268.52 km) |
| South Portland to Gijon | 3,146.42 mi (5,063.67 km) |
| South Portland to Gines | 3,316.26 mi (5,337.01 km) |
| South Portland to Girona | 3,581.55 mi (5,763.95 km) |
| South Portland to Godella | 3,514.35 mi (5,655.79 km) |
| South Portland to Gondomar | 3,043.89 mi (4,898.66 km) |
| South Portland to Grado | 3,133.28 mi (5,042.52 km) |
