| Castel San Giorgio to Huelva | 1,184.36 mi (1,906.04 km) |
| Castel San Giorgio to Huercal de Almeria | 958.90 mi (1,543.21 km) |
| Castel San Giorgio to Huercal-Overa | 920.91 mi (1,482.06 km) |
| Castel San Giorgio to Huesca | 787.25 mi (1,266.95 km) |
| Castel San Giorgio to Huetor Vega | 1,010.83 mi (1,626.77 km) |
| Castel San Giorgio to Huetor-Tajar | 1,034.63 mi (1,665.07 km) |
| Castel San Giorgio to Humanes de Madrid | 972.04 mi (1,564.35 km) |
| Castel San Giorgio to Ibi | 824.42 mi (1,326.77 km) |
| Castel San Giorgio to Ibiza | 714.88 mi (1,150.49 km) |
| Castel San Giorgio to Icod de los Vinos | 1,967.99 mi (3,167.18 km) |
| Castel San Giorgio to Igualada | 681.70 mi (1,097.10 km) |
| Castel San Giorgio to Illescas | 973.72 mi (1,567.05 km) |
| Castel San Giorgio to Inca | 625.26 mi (1,006.25 km) |
| Castel San Giorgio to Ingenio | 1,921.48 mi (3,092.32 km) |
| Castel San Giorgio to Irun | 862.53 mi (1,388.10 km) |
