| Round Rock to Hoyo de Manzanares | 5,063.24 mi (8,148.50 km) |
| Round Rock to Huelva | 5,016.72 mi (8,073.63 km) |
| Round Rock to Huercal de Almeria | 5,250.58 mi (8,450.00 km) |
| Round Rock to Huercal-Overa | 5,258.73 mi (8,463.11 km) |
| Round Rock to Huesca | 5,176.46 mi (8,330.70 km) |
| Round Rock to Huetor Vega | 5,186.62 mi (8,347.06 km) |
| Round Rock to Huetor-Tajar | 5,161.70 mi (8,306.96 km) |
| Round Rock to Humanes de Madrid | 5,077.45 mi (8,171.36 km) |
| Round Rock to Ibi | 5,283.23 mi (8,502.53 km) |
| Round Rock to Ibiza | 5,368.45 mi (8,639.68 km) |
| Round Rock to Icod de los Vinos | 4,759.42 mi (7,659.55 km) |
| Round Rock to Igualada | 5,286.82 mi (8,508.32 km) |
| Round Rock to Illescas | 5,081.39 mi (8,177.71 km) |
| Round Rock to Inca | 5,409.53 mi (8,705.80 km) |
| Round Rock to Ingenio | 4,841.98 mi (7,792.41 km) |
