| Staines-upon-Thames to Oliveira de Frades | 825.70 mi (1,328.84 km) |
| Staines-upon-Thames to Oliveira do Bairro | 845.07 mi (1,360.01 km) |
| Staines-upon-Thames to Oliveira do Hospital | 841.90 mi (1,354.91 km) |
| Staines-upon-Thames to Ourem | 901.41 mi (1,450.68 km) |
| Staines-upon-Thames to Ovar | 826.00 mi (1,329.32 km) |
| Staines-upon-Thames to Pacos de Ferreira | 795.82 mi (1,280.75 km) |
| Staines-upon-Thames to Palmela | 977.44 mi (1,573.04 km) |
| Staines-upon-Thames to Paredes | 798.52 mi (1,285.09 km) |
| Staines-upon-Thames to Paredes de Coura | 759.52 mi (1,222.33 km) |
| Staines-upon-Thames to Penacova | 856.08 mi (1,377.72 km) |
| Staines-upon-Thames to Penafiel | 797.06 mi (1,282.74 km) |
| Staines-upon-Thames to Peniche | 937.41 mi (1,508.62 km) |
| Staines-upon-Thames to Peso da Regua | 788.80 mi (1,269.45 km) |
| Staines-upon-Thames to Pinhal Novo | 973.60 mi (1,566.86 km) |
| Staines-upon-Thames to Pinhel | 799.31 mi (1,286.36 km) |
