| Allentown to Hoyo de Manzanares | 3,642.54 mi (5,862.09 km) |
| Allentown to Huelva | 3,595.44 mi (5,786.30 km) |
| Allentown to Huercal de Almeria | 3,828.47 mi (6,161.33 km) |
| Allentown to Huercal-Overa | 3,836.56 mi (6,174.34 km) |
| Allentown to Huesca | 3,760.62 mi (6,052.13 km) |
| Allentown to Huetor Vega | 3,764.57 mi (6,058.49 km) |
| Allentown to Huetor-Tajar | 3,739.71 mi (6,018.48 km) |
| Allentown to Humanes de Madrid | 3,656.36 mi (5,884.34 km) |
| Allentown to Ibi | 3,861.83 mi (6,215.01 km) |
| Allentown to Ibiza | 3,948.21 mi (6,354.02 km) |
| Allentown to Icod de los Vinos | 3,388.96 mi (5,454.01 km) |
| Allentown to Igualada | 3,871.53 mi (6,230.63 km) |
| Allentown to Illescas | 3,660.17 mi (5,890.47 km) |
| Allentown to Inca | 3,991.48 mi (6,423.66 km) |
| Allentown to Ingenio | 3,470.43 mi (5,585.12 km) |
