| Slough to Oliveira de Frades | 828.59 mi (1,333.48 km) |
| Slough to Oliveira do Bairro | 847.89 mi (1,364.55 km) |
| Slough to Oliveira do Hospital | 844.95 mi (1,359.81 km) |
| Slough to Ourem | 904.36 mi (1,455.43 km) |
| Slough to Ovar | 828.72 mi (1,333.69 km) |
| Slough to Pacos de Ferreira | 798.53 mi (1,285.11 km) |
| Slough to Palmela | 980.46 mi (1,577.90 km) |
| Slough to Paredes | 801.26 mi (1,289.50 km) |
| Slough to Paredes de Coura | 762.04 mi (1,226.38 km) |
| Slough to Penacova | 859.01 mi (1,382.44 km) |
| Slough to Penafiel | 799.82 mi (1,287.18 km) |
| Slough to Peniche | 940.18 mi (1,513.07 km) |
| Slough to Peso da Regua | 791.73 mi (1,274.17 km) |
| Slough to Pinhal Novo | 976.61 mi (1,571.69 km) |
| Slough to Pinhel | 802.53 mi (1,291.55 km) |
