| Onex to Hoyo de Manzanares | 630.18 mi (1,014.18 km) |
| Onex to Huelva | 911.04 mi (1,466.17 km) |
| Onex to Huercal de Almeria | 778.52 mi (1,252.90 km) |
| Onex to Huercal-Overa | 734.66 mi (1,182.31 km) |
| Onex to Huesca | 427.12 mi (687.38 km) |
| Onex to Huetor Vega | 797.80 mi (1,283.94 km) |
| Onex to Huetor-Tajar | 810.90 mi (1,305.02 km) |
| Onex to Humanes de Madrid | 645.45 mi (1,038.76 km) |
| Onex to Ibi | 622.81 mi (1,002.32 km) |
| Onex to Ibiza | 555.68 mi (894.28 km) |
| Onex to Icod de los Vinos | 1,745.66 mi (2,809.37 km) |
| Onex to Igualada | 388.26 mi (624.84 km) |
| Onex to Illescas | 652.13 mi (1,049.50 km) |
| Onex to Inca | 474.81 mi (764.13 km) |
| Onex to Ingenio | 1,721.40 mi (2,770.33 km) |
