| Gretna to Granada | 4,827.84 mi (7,769.66 km) |
| Gretna to Granadilla de Abona | 4,359.34 mi (7,015.68 km) |
| Gretna to Granollers | 4,992.89 mi (8,035.28 km) |
| Gretna to Grinon | 4,735.82 mi (7,621.57 km) |
| Gretna to Guadalajara | 4,758.47 mi (7,658.02 km) |
| Gretna to Guadarrama | 4,712.58 mi (7,584.16 km) |
| Gretna to Guadix | 4,848.24 mi (7,802.48 km) |
| Gretna to Guardamar del Segura | 4,950.65 mi (7,967.29 km) |
| Gretna to Guernica y Luno | 4,714.33 mi (7,586.99 km) |
| Gretna to Guia de Isora | 4,345.91 mi (6,994.06 km) |
| Gretna to Guillena | 4,694.03 mi (7,554.32 km) |
| Gretna to Guimar | 4,364.21 mi (7,023.52 km) |
| Gretna to Hellin | 4,887.73 mi (7,866.05 km) |
| Gretna to Herencia | 4,782.15 mi (7,696.13 km) |
| Gretna to Hernani | 4,748.37 mi (7,641.76 km) |
