| Bilbao to Nasaud | 1,350.38 mi (2,173.23 km) |
| Bilbao to Navodari | 1,565.00 mi (2,518.62 km) |
| Bilbao to Negresti-Oas | 1,306.80 mi (2,103.09 km) |
| Bilbao to Nehoiu | 1,444.45 mi (2,324.62 km) |
| Bilbao to Ocna Mures | 1,323.75 mi (2,130.37 km) |
| Bilbao to Odobesti | 1,478.99 mi (2,380.21 km) |
| Bilbao to Odorheiu Secuiesc | 1,392.58 mi (2,241.14 km) |
| Bilbao to Oltenita | 1,470.46 mi (2,366.47 km) |
| Bilbao to Onesti | 1,462.74 mi (2,354.05 km) |
| Bilbao to Oradea | 1,233.12 mi (1,984.52 km) |
| Bilbao to Orastie | 1,292.72 mi (2,080.44 km) |
| Bilbao to Oravita | 1,221.49 mi (1,965.79 km) |
| Bilbao to Orsova | 1,257.60 mi (2,023.91 km) |
| Bilbao to Otelu Rosu | 1,252.51 mi (2,015.73 km) |
| Bilbao to Otopeni | 1,438.54 mi (2,315.10 km) |
