| Opwijk to Oliveira do Bairro | 943.53 mi (1,518.47 km) |
| Opwijk to Oliveira do Hospital | 933.20 mi (1,501.85 km) |
| Opwijk to Ourem | 994.66 mi (1,600.75 km) |
| Opwijk to Ovar | 928.21 mi (1,493.82 km) |
| Opwijk to Pacos de Ferreira | 898.86 mi (1,446.57 km) |
| Opwijk to Palmela | 1,067.09 mi (1,717.31 km) |
| Opwijk to Paredes | 900.41 mi (1,449.08 km) |
| Opwijk to Paredes de Coura | 869.20 mi (1,398.84 km) |
| Opwijk to Penacova | 950.80 mi (1,530.17 km) |
| Opwijk to Penafiel | 898.53 mi (1,446.05 km) |
| Opwijk to Peniche | 1,035.85 mi (1,667.05 km) |
| Opwijk to Peso da Regua | 885.05 mi (1,424.35 km) |
| Opwijk to Pinhal Novo | 1,063.75 mi (1,711.93 km) |
| Opwijk to Pinhel | 885.56 mi (1,425.17 km) |
| Opwijk to Pombal | 981.32 mi (1,579.28 km) |
