| Slough to Fuente-Alamo de Murcia | 951.79 mi (1,531.77 km) |
| Slough to Galapagar | 772.64 mi (1,243.45 km) |
| Slough to Galdacano | 581.54 mi (935.90 km) |
| Slough to Gandia | 866.77 mi (1,394.93 km) |
| Slough to Garrucha | 991.54 mi (1,595.73 km) |
| Slough to Gava | 715.45 mi (1,151.40 km) |
| Slough to Gelves | 1,014.66 mi (1,632.95 km) |
| Slough to Getafe | 788.52 mi (1,268.99 km) |
| Slough to Gibraleon | 1,025.01 mi (1,649.59 km) |
| Slough to Gijon | 600.07 mi (965.72 km) |
| Slough to Gines | 1,011.81 mi (1,628.36 km) |
| Slough to Girona | 677.38 mi (1,090.13 km) |
| Slough to Godella | 828.36 mi (1,333.12 km) |
| Slough to Gondomar | 754.55 mi (1,214.33 km) |
| Slough to Grado | 616.40 mi (992.00 km) |
