| Birmingham to Nasaud | 1,217.32 mi (1,959.09 km) |
| Birmingham to Navodari | 1,495.11 mi (2,406.15 km) |
| Birmingham to Negresti-Oas | 1,158.36 mi (1,864.20 km) |
| Birmingham to Nehoiu | 1,361.43 mi (2,191.00 km) |
| Birmingham to Ocna Mures | 1,223.73 mi (1,969.40 km) |
| Birmingham to Odobesti | 1,378.47 mi (2,218.43 km) |
| Birmingham to Odorheiu Secuiesc | 1,286.21 mi (2,069.96 km) |
| Birmingham to Oltenita | 1,422.49 mi (2,289.28 km) |
| Birmingham to Onesti | 1,349.26 mi (2,171.43 km) |
| Birmingham to Oradea | 1,120.56 mi (1,803.37 km) |
| Birmingham to Orastie | 1,215.33 mi (1,955.88 km) |
| Birmingham to Oravita | 1,183.76 mi (1,905.07 km) |
| Birmingham to Orsova | 1,224.77 mi (1,971.07 km) |
| Birmingham to Otelu Rosu | 1,192.70 mi (1,919.46 km) |
| Birmingham to Otopeni | 1,381.42 mi (2,223.17 km) |
