| Formia to Granadilla de Abona | 1,927.42 mi (3,101.88 km) |
| Formia to Granollers | 586.81 mi (944.37 km) |
| Formia to Grinon | 915.69 mi (1,473.66 km) |
| Formia to Guadalajara | 875.60 mi (1,409.14 km) |
| Formia to Guadarrama | 923.00 mi (1,485.43 km) |
| Formia to Guadix | 935.03 mi (1,504.79 km) |
| Formia to Guardamar del Segura | 788.98 mi (1,269.74 km) |
| Formia to Guernica y Luno | 842.81 mi (1,356.37 km) |
| Formia to Guia de Isora | 1,933.21 mi (3,111.20 km) |
| Formia to Guillena | 1,078.66 mi (1,735.94 km) |
| Formia to Guimar | 1,910.83 mi (3,075.18 km) |
| Formia to Hellin | 831.84 mi (1,338.72 km) |
| Formia to Herencia | 902.20 mi (1,451.95 km) |
| Formia to Hernani | 807.44 mi (1,299.46 km) |
| Formia to Hoyo de Manzanares | 912.74 mi (1,468.91 km) |
