| Staines-upon-Thames to Montalegre | 747.66 mi (1,203.24 km) |
| Staines-upon-Thames to Montemor-o-Novo | 958.78 mi (1,543.00 km) |
| Staines-upon-Thames to Montemor-o-Velho | 871.09 mi (1,401.88 km) |
| Staines-upon-Thames to Montijo | 969.97 mi (1,561.02 km) |
| Staines-upon-Thames to Mortagua | 844.71 mi (1,359.42 km) |
| Staines-upon-Thames to Moura | 978.88 mi (1,575.35 km) |
| Staines-upon-Thames to Murtosa | 834.35 mi (1,342.76 km) |
| Staines-upon-Thames to Nazare | 915.12 mi (1,472.75 km) |
| Staines-upon-Thames to Nelas | 831.56 mi (1,338.27 km) |
| Staines-upon-Thames to Obidos | 932.37 mi (1,500.51 km) |
| Staines-upon-Thames to Odemira | 1,035.77 mi (1,666.91 km) |
| Staines-upon-Thames to Odivelas | 968.89 mi (1,559.27 km) |
| Staines-upon-Thames to Oeiras | 978.57 mi (1,574.85 km) |
| Staines-upon-Thames to Olhao | 1,058.27 mi (1,703.13 km) |
| Staines-upon-Thames to Oliveira de Azemeis | 824.19 mi (1,326.40 km) |
