| South Portland to Granada | 3,442.27 mi (5,539.79 km) |
| South Portland to Granadilla de Abona | 3,131.81 mi (5,040.16 km) |
| South Portland to Granollers | 3,569.89 mi (5,745.18 km) |
| South Portland to Grinon | 3,330.74 mi (5,360.30 km) |
| South Portland to Guadalajara | 3,349.58 mi (5,390.63 km) |
| South Portland to Guadarrama | 3,305.27 mi (5,319.32 km) |
| South Portland to Guadix | 3,460.48 mi (5,569.11 km) |
| South Portland to Guardamar del Segura | 3,551.24 mi (5,715.16 km) |
| South Portland to Guernica y Luno | 3,291.25 mi (5,296.76 km) |
| South Portland to Guia de Isora | 3,118.34 mi (5,018.48 km) |
| South Portland to Guillena | 3,312.78 mi (5,331.41 km) |
| South Portland to Guimar | 3,132.66 mi (5,041.52 km) |
| South Portland to Hellin | 3,488.18 mi (5,613.68 km) |
| South Portland to Herencia | 3,381.20 mi (5,441.51 km) |
| South Portland to Hernani | 3,324.57 mi (5,350.38 km) |
