| Mason City to Hoyo de Manzanares | 4,361.86 mi (7,019.73 km) |
| Mason City to Huelva | 4,361.97 mi (7,019.91 km) |
| Mason City to Huercal de Almeria | 4,577.81 mi (7,367.28 km) |
| Mason City to Huercal-Overa | 4,578.89 mi (7,369.01 km) |
| Mason City to Huesca | 4,447.68 mi (7,157.84 km) |
| Mason City to Huetor Vega | 4,516.74 mi (7,268.99 km) |
| Mason City to Huetor-Tajar | 4,493.68 mi (7,231.88 km) |
| Mason City to Humanes de Madrid | 4,379.36 mi (7,047.90 km) |
| Mason City to Ibi | 4,585.75 mi (7,380.04 km) |
| Mason City to Ibiza | 4,659.48 mi (7,498.71 km) |
| Mason City to Icod de los Vinos | 4,260.55 mi (6,856.70 km) |
| Mason City to Igualada | 4,554.56 mi (7,329.85 km) |
| Mason City to Illescas | 4,384.61 mi (7,056.34 km) |
| Mason City to Inca | 4,687.23 mi (7,543.37 km) |
| Mason City to Ingenio | 4,340.25 mi (6,984.96 km) |
