| Seaham to Oliveira de Frades | 1,025.06 mi (1,649.67 km) |
| Seaham to Oliveira do Bairro | 1,042.87 mi (1,678.34 km) |
| Seaham to Oliveira do Hospital | 1,044.57 mi (1,681.07 km) |
| Seaham to Ourem | 1,101.49 mi (1,772.67 km) |
| Seaham to Ovar | 1,021.63 mi (1,644.15 km) |
| Seaham to Pacos de Ferreira | 991.67 mi (1,595.93 km) |
| Seaham to Palmela | 1,178.41 mi (1,896.46 km) |
| Seaham to Paredes | 995.10 mi (1,601.46 km) |
| Seaham to Paredes de Coura | 951.49 mi (1,531.27 km) |
| Seaham to Penacova | 1,056.17 mi (1,699.74 km) |
| Seaham to Penafiel | 993.99 mi (1,599.66 km) |
| Seaham to Peniche | 1,133.12 mi (1,823.59 km) |
| Seaham to Peso da Regua | 989.55 mi (1,592.53 km) |
| Seaham to Pinhal Novo | 1,174.31 mi (1,889.87 km) |
| Seaham to Pinhel | 1,006.08 mi (1,619.13 km) |
