| Duffel to Huelva | 1,109.98 mi (1,786.34 km) |
| Duffel to Huercal de Almeria | 1,040.11 mi (1,673.89 km) |
| Duffel to Huercal-Overa | 999.10 mi (1,607.89 km) |
| Duffel to Huesca | 661.92 mi (1,065.26 km) |
| Duffel to Huetor Vega | 1,042.38 mi (1,677.55 km) |
| Duffel to Huetor-Tajar | 1,048.68 mi (1,687.70 km) |
| Duffel to Humanes de Madrid | 849.53 mi (1,367.19 km) |
| Duffel to Ibi | 896.58 mi (1,442.91 km) |
| Duffel to Ibiza | 855.49 mi (1,376.77 km) |
| Duffel to Icod de los Vinos | 1,919.43 mi (3,089.02 km) |
| Duffel to Igualada | 671.88 mi (1,081.29 km) |
| Duffel to Illescas | 858.23 mi (1,381.19 km) |
| Duffel to Inca | 790.28 mi (1,271.83 km) |
| Duffel to Ingenio | 1,908.81 mi (3,071.94 km) |
| Duffel to Irun | 612.00 mi (984.92 km) |
