| Slough to Granada | 1,001.03 mi (1,611.00 km) |
| Slough to Granadilla de Abona | 1,816.50 mi (2,923.38 km) |
| Slough to Granollers | 697.41 mi (1,122.37 km) |
| Slough to Grinon | 795.60 mi (1,280.39 km) |
| Slough to Guadalajara | 761.34 mi (1,225.27 km) |
| Slough to Guadarrama | 767.00 mi (1,234.36 km) |
| Slough to Guadix | 989.55 mi (1,592.53 km) |
| Slough to Guardamar del Segura | 927.15 mi (1,492.10 km) |
| Slough to Guernica y Luno | 574.21 mi (924.10 km) |
| Slough to Guia de Isora | 1,815.13 mi (2,921.17 km) |
| Slough to Guillena | 1,001.66 mi (1,612.02 km) |
| Slough to Guimar | 1,799.79 mi (2,896.48 km) |
| Slough to Hellin | 899.20 mi (1,447.13 km) |
| Slough to Herencia | 849.39 mi (1,366.96 km) |
| Slough to Hernani | 573.06 mi (922.25 km) |
