| Formia to Huelva | 1,131.79 mi (1,821.44 km) |
| Formia to Huercal de Almeria | 910.97 mi (1,466.06 km) |
| Formia to Huercal-Overa | 871.92 mi (1,403.22 km) |
| Formia to Huesca | 725.60 mi (1,167.74 km) |
| Formia to Huetor Vega | 961.03 mi (1,546.62 km) |
| Formia to Huetor-Tajar | 984.29 mi (1,584.07 km) |
| Formia to Humanes de Madrid | 914.08 mi (1,471.08 km) |
| Formia to Ibi | 772.58 mi (1,243.34 km) |
| Formia to Ibiza | 663.70 mi (1,068.13 km) |
| Formia to Icod de los Vinos | 1,923.73 mi (3,095.94 km) |
| Formia to Igualada | 621.37 mi (1,000.00 km) |
| Formia to Illescas | 916.07 mi (1,474.28 km) |
| Formia to Inca | 571.95 mi (920.47 km) |
| Formia to Ingenio | 1,879.05 mi (3,024.04 km) |
| Formia to Irun | 798.94 mi (1,285.77 km) |
