| Gretna to Fuente-Alamo de Murcia | 4,933.92 mi (7,940.38 km) |
| Gretna to Galapagar | 4,719.26 mi (7,594.91 km) |
| Gretna to Galdacano | 4,708.08 mi (7,576.92 km) |
| Gretna to Gandia | 4,949.25 mi (7,965.04 km) |
| Gretna to Garrucha | 4,917.64 mi (7,914.17 km) |
| Gretna to Gava | 4,988.11 mi (8,027.59 km) |
| Gretna to Gelves | 4,700.82 mi (7,565.23 km) |
| Gretna to Getafe | 4,739.40 mi (7,627.33 km) |
| Gretna to Gibraleon | 4,651.04 mi (7,485.12 km) |
| Gretna to Gijon | 4,566.37 mi (7,348.86 km) |
| Gretna to Gines | 4,696.30 mi (7,557.97 km) |
| Gretna to Girona | 5,006.77 mi (8,057.62 km) |
| Gretna to Godella | 4,922.61 mi (7,922.17 km) |
| Gretna to Gondomar | 4,451.10 mi (7,163.35 km) |
| Gretna to Grado | 4,551.99 mi (7,325.72 km) |
