| Keystone to Hoyo de Manzanares | 4,423.66 mi (7,119.19 km) |
| Keystone to Huelva | 4,328.93 mi (6,966.74 km) |
| Keystone to Huercal de Almeria | 4,574.39 mi (7,361.77 km) |
| Keystone to Huercal-Overa | 4,589.70 mi (7,386.42 km) |
| Keystone to Huesca | 4,566.60 mi (7,349.23 km) |
| Keystone to Huetor Vega | 4,509.23 mi (7,256.90 km) |
| Keystone to Huetor-Tajar | 4,483.11 mi (7,214.86 km) |
| Keystone to Humanes de Madrid | 4,433.66 mi (7,135.29 km) |
| Keystone to Ibi | 4,632.75 mi (7,455.69 km) |
| Keystone to Ibiza | 4,728.74 mi (7,610.17 km) |
| Keystone to Icod de los Vinos | 3,956.42 mi (6,367.24 km) |
| Keystone to Igualada | 4,678.09 mi (7,528.65 km) |
| Keystone to Illescas | 4,436.01 mi (7,139.07 km) |
| Keystone to Inca | 4,784.65 mi (7,700.14 km) |
| Keystone to Ingenio | 4,038.96 mi (6,500.07 km) |
