| Huntsville to Noventa Vicentina | 4,919.49 mi (7,917.15 km) |
| Huntsville to Novi di Modena | 4,906.65 mi (7,896.49 km) |
| Huntsville to Novi Ligure | 4,821.38 mi (7,759.25 km) |
| Huntsville to Nuoro | 4,999.47 mi (8,045.88 km) |
| Huntsville to Occhiobello | 4,934.29 mi (7,940.97 km) |
| Huntsville to Oderzo | 4,941.65 mi (7,952.82 km) |
| Huntsville to Oggiono | 4,810.71 mi (7,742.08 km) |
| Huntsville to Olbia | 4,985.71 mi (8,023.73 km) |
| Huntsville to Oleggio | 4,786.64 mi (7,703.35 km) |
| Huntsville to Olgiate Comasco | 4,794.58 mi (7,716.13 km) |
| Huntsville to Olgiate Olona | 4,796.09 mi (7,718.57 km) |
| Huntsville to Omegna | 4,767.82 mi (7,673.06 km) |
| Huntsville to Opera | 4,818.61 mi (7,754.81 km) |
| Huntsville to Oppeano | 4,904.26 mi (7,892.64 km) |
| Huntsville to Orbassano | 4,759.57 mi (7,659.79 km) |
