| Sierpc to Oliveira do Bairro | 1,569.10 mi (2,525.22 km) |
| Sierpc to Oliveira do Hospital | 1,551.90 mi (2,497.54 km) |
| Sierpc to Ourem | 1,612.65 mi (2,595.31 km) |
| Sierpc to Ovar | 1,558.07 mi (2,507.46 km) |
| Sierpc to Pacos de Ferreira | 1,530.66 mi (2,463.36 km) |
| Sierpc to Palmela | 1,677.99 mi (2,700.46 km) |
| Sierpc to Paredes | 1,531.09 mi (2,464.05 km) |
| Sierpc to Paredes de Coura | 1,508.04 mi (2,426.96 km) |
| Sierpc to Penacova | 1,572.26 mi (2,530.31 km) |
| Sierpc to Penafiel | 1,528.89 mi (2,460.52 km) |
| Sierpc to Peniche | 1,657.75 mi (2,667.89 km) |
| Sierpc to Peso da Regua | 1,510.99 mi (2,431.71 km) |
| Sierpc to Pinhal Novo | 1,675.35 mi (2,696.22 km) |
| Sierpc to Pinhel | 1,501.35 mi (2,416.19 km) |
| Sierpc to Pombal | 1,602.32 mi (2,578.68 km) |
