| Sierning to Oliveira do Bairro | 1,236.26 mi (1,989.57 km) |
| Sierning to Oliveira do Hospital | 1,214.03 mi (1,953.79 km) |
| Sierning to Ourem | 1,272.31 mi (2,047.58 km) |
| Sierning to Ovar | 1,229.38 mi (1,978.49 km) |
| Sierning to Pacos de Ferreira | 1,204.72 mi (1,938.81 km) |
| Sierning to Palmela | 1,330.60 mi (2,141.40 km) |
| Sierning to Paredes | 1,204.09 mi (1,937.80 km) |
| Sierning to Paredes de Coura | 1,189.97 mi (1,915.08 km) |
| Sierning to Penacova | 1,235.91 mi (1,989.00 km) |
| Sierning to Penafiel | 1,201.68 mi (1,933.91 km) |
| Sierning to Peniche | 1,319.17 mi (2,122.99 km) |
| Sierning to Peso da Regua | 1,180.49 mi (1,899.81 km) |
| Sierning to Pinhal Novo | 1,328.54 mi (2,138.08 km) |
| Sierning to Pinhel | 1,163.03 mi (1,871.72 km) |
| Sierning to Pombal | 1,264.64 mi (2,035.25 km) |
