| Biddeford to Oliveira de Frades | 3,122.45 mi (5,025.10 km) |
| Biddeford to Oliveira do Bairro | 3,113.29 mi (5,010.35 km) |
| Biddeford to Oliveira do Hospital | 3,148.25 mi (5,066.62 km) |
| Biddeford to Ourem | 3,135.95 mi (5,046.83 km) |
| Biddeford to Ovar | 3,096.74 mi (4,983.71 km) |
| Biddeford to Pacos de Ferreira | 3,096.24 mi (4,982.91 km) |
| Biddeford to Palmela | 3,153.19 mi (5,074.57 km) |
| Biddeford to Paredes | 3,101.30 mi (4,991.07 km) |
| Biddeford to Paredes de Coura | 3,070.28 mi (4,941.14 km) |
| Biddeford to Penacova | 3,130.87 mi (5,038.65 km) |
| Biddeford to Penafiel | 3,103.46 mi (4,994.54 km) |
| Biddeford to Peniche | 3,106.68 mi (4,999.71 km) |
| Biddeford to Peso da Regua | 3,128.61 mi (5,035.01 km) |
| Biddeford to Pinhal Novo | 3,150.51 mi (5,070.26 km) |
| Biddeford to Pinhel | 3,173.34 mi (5,106.99 km) |
