| Castleford to Hoyo de Manzanares | 911.54 mi (1,466.97 km) |
| Castleford to Huelva | 1,168.61 mi (1,880.70 km) |
| Castleford to Huercal de Almeria | 1,164.17 mi (1,873.55 km) |
| Castleford to Huercal-Overa | 1,128.82 mi (1,816.65 km) |
| Castleford to Huesca | 801.45 mi (1,289.81 km) |
| Castleford to Huetor Vega | 1,149.46 mi (1,849.88 km) |
| Castleford to Huetor-Tajar | 1,148.72 mi (1,848.69 km) |
| Castleford to Humanes de Madrid | 937.26 mi (1,508.37 km) |
| Castleford to Ibi | 1,043.19 mi (1,678.85 km) |
| Castleford to Ibiza | 1,031.49 mi (1,660.02 km) |
| Castleford to Icod de los Vinos | 1,917.02 mi (3,085.15 km) |
| Castleford to Igualada | 849.60 mi (1,367.29 km) |
| Castleford to Illescas | 946.72 mi (1,523.59 km) |
| Castleford to Inca | 987.75 mi (1,589.63 km) |
| Castleford to Ingenio | 1,920.14 mi (3,090.16 km) |
