| Huntsville to Nasaud | 5,348.69 mi (8,607.88 km) |
| Huntsville to Navodari | 5,635.25 mi (9,069.06 km) |
| Huntsville to Negresti-Oas | 5,287.68 mi (8,509.70 km) |
| Huntsville to Nehoiu | 5,502.94 mi (8,856.13 km) |
| Huntsville to Ocna Mures | 5,366.40 mi (8,636.39 km) |
| Huntsville to Odobesti | 5,512.89 mi (8,872.14 km) |
| Huntsville to Odorheiu Secuiesc | 5,423.53 mi (8,728.32 km) |
| Huntsville to Oltenita | 5,571.53 mi (8,966.51 km) |
| Huntsville to Onesti | 5,480.12 mi (8,819.39 km) |
| Huntsville to Oradea | 5,264.80 mi (8,472.88 km) |
| Huntsville to Orastie | 5,364.31 mi (8,633.02 km) |
| Huntsville to Oravita | 5,339.73 mi (8,593.47 km) |
| Huntsville to Orsova | 5,380.62 mi (8,659.26 km) |
| Huntsville to Otelu Rosu | 5,345.74 mi (8,603.14 km) |
| Huntsville to Otopeni | 5,529.51 mi (8,898.89 km) |
