| Greenock to Granada | 1,298.14 mi (2,089.16 km) |
| Greenock to Granadilla de Abona | 2,010.05 mi (3,234.87 km) |
| Greenock to Granollers | 1,040.35 mi (1,674.28 km) |
| Greenock to Grinon | 1,087.86 mi (1,750.74 km) |
| Greenock to Guadalajara | 1,060.73 mi (1,707.07 km) |
| Greenock to Guadarrama | 1,056.00 mi (1,699.46 km) |
| Greenock to Guadix | 1,290.82 mi (2,077.38 km) |
| Greenock to Guardamar del Segura | 1,248.57 mi (2,009.38 km) |
| Greenock to Guernica y Luno | 877.81 mi (1,412.69 km) |
| Greenock to Guia de Isora | 2,006.55 mi (3,229.23 km) |
| Greenock to Guillena | 1,273.87 mi (2,050.09 km) |
| Greenock to Guimar | 1,994.26 mi (3,209.44 km) |
| Greenock to Hellin | 1,212.87 mi (1,951.92 km) |
| Greenock to Herencia | 1,147.60 mi (1,846.88 km) |
| Greenock to Hernani | 885.05 mi (1,424.36 km) |
