| Huelva to Nasaud | 1,731.72 mi (2,786.94 km) |
| Huelva to Navodari | 1,907.27 mi (3,069.45 km) |
| Huelva to Negresti-Oas | 1,696.42 mi (2,730.12 km) |
| Huelva to Nehoiu | 1,799.88 mi (2,896.63 km) |
| Huelva to Ocna Mures | 1,694.16 mi (2,726.48 km) |
| Huelva to Odobesti | 1,839.68 mi (2,960.68 km) |
| Huelva to Odorheiu Secuiesc | 1,760.96 mi (2,833.99 km) |
| Huelva to Oltenita | 1,808.67 mi (2,910.77 km) |
| Huelva to Onesti | 1,829.71 mi (2,944.63 km) |
| Huelva to Oradea | 1,614.75 mi (2,598.69 km) |
| Huelva to Orastie | 1,656.27 mi (2,665.52 km) |
| Huelva to Oravita | 1,574.19 mi (2,533.41 km) |
| Huelva to Orsova | 1,605.06 mi (2,583.09 km) |
| Huelva to Otelu Rosu | 1,611.95 mi (2,594.18 km) |
| Huelva to Otopeni | 1,783.05 mi (2,869.53 km) |
