| Houghton Regis to Hoyo de Manzanares | 794.85 mi (1,279.18 km) |
| Houghton Regis to Huelva | 1,059.69 mi (1,705.40 km) |
| Houghton Regis to Huercal de Almeria | 1,042.00 mi (1,676.93 km) |
| Houghton Regis to Huercal-Overa | 1,005.61 mi (1,618.38 km) |
| Houghton Regis to Huesca | 675.10 mi (1,086.47 km) |
| Houghton Regis to Huetor Vega | 1,030.11 mi (1,657.81 km) |
| Houghton Regis to Huetor-Tajar | 1,030.68 mi (1,658.72 km) |
| Houghton Regis to Humanes de Madrid | 820.13 mi (1,319.87 km) |
| Houghton Regis to Ibi | 917.33 mi (1,476.31 km) |
| Houghton Regis to Ibiza | 902.79 mi (1,452.89 km) |
| Houghton Regis to Icod de los Vinos | 1,828.70 mi (2,943.01 km) |
| Houghton Regis to Igualada | 720.33 mi (1,159.26 km) |
| Houghton Regis to Illescas | 829.52 mi (1,334.98 km) |
| Houghton Regis to Inca | 857.95 mi (1,380.74 km) |
| Houghton Regis to Ingenio | 1,827.54 mi (2,941.15 km) |
