| Harpenden to Granada | 1,023.81 mi (1,647.66 km) |
| Harpenden to Granadilla de Abona | 1,839.90 mi (2,961.03 km) |
| Harpenden to Granollers | 716.27 mi (1,152.73 km) |
| Harpenden to Grinon | 818.67 mi (1,317.52 km) |
| Harpenden to Guadalajara | 784.20 mi (1,262.04 km) |
| Harpenden to Guadarrama | 790.18 mi (1,271.67 km) |
| Harpenden to Guadix | 1,012.17 mi (1,628.92 km) |
| Harpenden to Guardamar del Segura | 948.61 mi (1,526.64 km) |
| Harpenden to Guernica y Luno | 597.09 mi (960.93 km) |
| Harpenden to Guia de Isora | 1,838.50 mi (2,958.78 km) |
| Harpenden to Guillena | 1,025.08 mi (1,649.70 km) |
| Harpenden to Guimar | 1,823.19 mi (2,934.14 km) |
| Harpenden to Hellin | 921.24 mi (1,482.59 km) |
| Harpenden to Herencia | 872.22 mi (1,403.70 km) |
| Harpenden to Hernani | 595.54 mi (958.43 km) |
