| London to Nasaud | 1,135.26 mi (1,827.02 km) |
| London to Navodari | 1,409.46 mi (2,268.30 km) |
| London to Negresti-Oas | 1,077.23 mi (1,733.64 km) |
| London to Nehoiu | 1,275.88 mi (2,053.33 km) |
| London to Ocna Mures | 1,138.41 mi (1,832.09 km) |
| London to Odobesti | 1,294.75 mi (2,083.69 km) |
| London to Odorheiu Secuiesc | 1,202.17 mi (1,934.71 km) |
| London to Oltenita | 1,334.36 mi (2,147.45 km) |
| London to Onesti | 1,266.56 mi (2,038.34 km) |
| London to Oradea | 1,035.22 mi (1,666.02 km) |
| London to Orastie | 1,127.84 mi (1,815.08 km) |
| London to Oravita | 1,092.69 mi (1,758.51 km) |
| London to Orsova | 1,133.73 mi (1,824.56 km) |
| London to Otelu Rosu | 1,103.46 mi (1,775.85 km) |
| London to Otopeni | 1,293.73 mi (2,082.06 km) |
