| Siniscola to Oliveira do Bairro | 953.67 mi (1,534.78 km) |
| Siniscola to Oliveira do Hospital | 921.57 mi (1,483.12 km) |
| Siniscola to Ourem | 965.42 mi (1,553.70 km) |
| Siniscola to Ovar | 958.30 mi (1,542.24 km) |
| Siniscola to Pacos de Ferreira | 944.28 mi (1,519.67 km) |
| Siniscola to Palmela | 998.19 mi (1,606.44 km) |
| Siniscola to Paredes | 941.07 mi (1,514.51 km) |
| Siniscola to Paredes de Coura | 951.25 mi (1,530.89 km) |
| Siniscola to Penacova | 944.31 mi (1,519.72 km) |
| Siniscola to Penafiel | 938.49 mi (1,510.35 km) |
| Siniscola to Peniche | 1,011.09 mi (1,627.19 km) |
| Siniscola to Peso da Regua | 912.30 mi (1,468.20 km) |
| Siniscola to Pinhal Novo | 997.87 mi (1,605.92 km) |
| Siniscola to Pinhel | 877.14 mi (1,411.62 km) |
| Siniscola to Pombal | 965.72 mi (1,554.17 km) |
