| Staines-upon-Thames to Nasaud | 1,151.27 mi (1,852.79 km) |
| Staines-upon-Thames to Navodari | 1,424.97 mi (2,293.27 km) |
| Staines-upon-Thames to Negresti-Oas | 1,093.36 mi (1,759.59 km) |
| Staines-upon-Thames to Nehoiu | 1,291.43 mi (2,078.35 km) |
| Staines-upon-Thames to Ocna Mures | 1,154.01 mi (1,857.20 km) |
| Staines-upon-Thames to Odobesti | 1,310.54 mi (2,109.11 km) |
| Staines-upon-Thames to Odorheiu Secuiesc | 1,217.94 mi (1,960.08 km) |
| Staines-upon-Thames to Oltenita | 1,349.50 mi (2,171.81 km) |
| Staines-upon-Thames to Onesti | 1,282.48 mi (2,063.96 km) |
| Staines-upon-Thames to Oradea | 1,050.83 mi (1,691.15 km) |
| Staines-upon-Thames to Orastie | 1,143.11 mi (1,839.66 km) |
| Staines-upon-Thames to Oravita | 1,107.30 mi (1,782.02 km) |
| Staines-upon-Thames to Orsova | 1,148.34 mi (1,848.07 km) |
| Staines-upon-Thames to Otelu Rosu | 1,118.44 mi (1,799.95 km) |
| Staines-upon-Thames to Otopeni | 1,308.95 mi (2,106.55 km) |
