| Duluth to Hoyo de Manzanares | 4,189.60 mi (6,742.51 km) |
| Duluth to Huelva | 4,205.76 mi (6,768.51 km) |
| Duluth to Huercal de Almeria | 4,414.12 mi (7,103.84 km) |
| Duluth to Huercal-Overa | 4,412.79 mi (7,101.69 km) |
| Duluth to Huesca | 4,265.38 mi (6,864.47 km) |
| Duluth to Huetor Vega | 4,354.40 mi (7,007.72 km) |
| Duluth to Huetor-Tajar | 4,332.11 mi (6,971.85 km) |
| Duluth to Humanes de Madrid | 4,208.15 mi (6,772.36 km) |
| Duluth to Ibi | 4,413.58 mi (7,102.98 km) |
| Duluth to Ibiza | 4,482.99 mi (7,214.67 km) |
| Duluth to Icod de los Vinos | 4,156.82 mi (6,689.75 km) |
| Duluth to Igualada | 4,370.52 mi (7,033.67 km) |
| Duluth to Illescas | 4,213.82 mi (6,781.48 km) |
| Duluth to Inca | 4,506.02 mi (7,251.73 km) |
| Duluth to Ingenio | 4,234.85 mi (6,815.33 km) |
