| Preston to Nasaud | 1,262.56 mi (2,031.89 km) |
| Preston to Navodari | 1,544.43 mi (2,485.52 km) |
| Preston to Negresti-Oas | 1,202.62 mi (1,935.42 km) |
| Preston to Nehoiu | 1,410.95 mi (2,270.70 km) |
| Preston to Ocna Mures | 1,273.39 mi (2,049.32 km) |
| Preston to Odobesti | 1,425.38 mi (2,293.94 km) |
| Preston to Odorheiu Secuiesc | 1,333.86 mi (2,146.65 km) |
| Preston to Oltenita | 1,475.61 mi (2,374.77 km) |
| Preston to Onesti | 1,394.87 mi (2,244.83 km) |
| Preston to Oradea | 1,170.67 mi (1,884.01 km) |
| Preston to Orastie | 1,268.12 mi (2,040.84 km) |
| Preston to Oravita | 1,242.08 mi (1,998.94 km) |
| Preston to Orsova | 1,282.91 mi (2,064.64 km) |
| Preston to Otelu Rosu | 1,248.15 mi (2,008.70 km) |
| Preston to Otopeni | 1,433.98 mi (2,307.77 km) |
