| Alton to Hoyo de Manzanares | 739.78 mi (1,190.57 km) |
| Alton to Huelva | 1,004.08 mi (1,615.92 km) |
| Alton to Huercal de Almeria | 988.32 mi (1,590.55 km) |
| Alton to Huercal-Overa | 952.33 mi (1,532.62 km) |
| Alton to Huesca | 623.54 mi (1,003.49 km) |
| Alton to Huetor Vega | 975.61 mi (1,570.10 km) |
| Alton to Huetor-Tajar | 975.90 mi (1,570.56 km) |
| Alton to Humanes de Madrid | 765.14 mi (1,231.38 km) |
| Alton to Ibi | 865.45 mi (1,392.80 km) |
| Alton to Ibiza | 853.79 mi (1,374.04 km) |
| Alton to Icod de los Vinos | 1,774.50 mi (2,855.78 km) |
| Alton to Igualada | 672.50 mi (1,082.28 km) |
| Alton to Illescas | 774.55 mi (1,246.51 km) |
| Alton to Inca | 811.89 mi (1,306.61 km) |
| Alton to Ingenio | 1,772.81 mi (2,853.06 km) |
