| Southborough to Hoyo de Manzanares | 753.85 mi (1,213.21 km) |
| Southborough to Huelva | 1,024.15 mi (1,648.20 km) |
| Southborough to Huercal de Almeria | 995.30 mi (1,601.78 km) |
| Southborough to Huercal-Overa | 957.94 mi (1,541.66 km) |
| Southborough to Huesca | 624.50 mi (1,005.04 km) |
| Southborough to Huetor Vega | 986.09 mi (1,586.96 km) |
| Southborough to Huetor-Tajar | 987.82 mi (1,589.74 km) |
| Southborough to Humanes de Madrid | 778.65 mi (1,253.12 km) |
| Southborough to Ibi | 866.88 mi (1,395.11 km) |
| Southborough to Ibiza | 848.34 mi (1,365.28 km) |
| Southborough to Icod de los Vinos | 1,805.58 mi (2,905.80 km) |
| Southborough to Igualada | 664.92 mi (1,070.08 km) |
| Southborough to Illescas | 787.95 mi (1,268.08 km) |
| Southborough to Inca | 800.88 mi (1,288.89 km) |
| Southborough to Ingenio | 1,801.75 mi (2,899.64 km) |
