| Sierre to Oliveira de Frades | 874.89 mi (1,408.01 km) |
| Sierre to Oliveira do Bairro | 896.28 mi (1,442.42 km) |
| Sierre to Oliveira do Hospital | 873.83 mi (1,406.30 km) |
| Sierre to Ourem | 932.10 mi (1,500.08 km) |
| Sierre to Ovar | 889.79 mi (1,431.97 km) |
| Sierre to Pacos de Ferreira | 865.54 mi (1,392.95 km) |
| Sierre to Palmela | 990.87 mi (1,594.66 km) |
| Sierre to Paredes | 864.76 mi (1,391.70 km) |
| Sierre to Paredes de Coura | 852.25 mi (1,371.56 km) |
| Sierre to Penacova | 895.75 mi (1,441.57 km) |
| Sierre to Penafiel | 862.33 mi (1,387.78 km) |
| Sierre to Peniche | 978.95 mi (1,575.47 km) |
| Sierre to Peso da Regua | 840.80 mi (1,353.14 km) |
| Sierre to Pinhal Novo | 988.75 mi (1,591.24 km) |
| Sierre to Pinhel | 822.84 mi (1,324.24 km) |
