| Port Royal to Oliveira de Frades | 3,953.46 mi (6,362.48 km) |
| Port Royal to Oliveira do Bairro | 3,941.48 mi (6,343.20 km) |
| Port Royal to Oliveira do Hospital | 3,976.73 mi (6,399.92 km) |
| Port Royal to Ourem | 3,955.42 mi (6,365.64 km) |
| Port Royal to Ovar | 3,927.95 mi (6,321.42 km) |
| Port Royal to Pacos de Ferreira | 3,931.91 mi (6,327.79 km) |
| Port Royal to Palmela | 3,960.63 mi (6,374.02 km) |
| Port Royal to Paredes | 3,936.52 mi (6,335.22 km) |
| Port Royal to Paredes de Coura | 3,911.62 mi (6,295.15 km) |
| Port Royal to Penacova | 3,957.29 mi (6,368.64 km) |
| Port Royal to Penafiel | 3,938.86 mi (6,338.99 km) |
| Port Royal to Peniche | 3,920.67 mi (6,309.71 km) |
| Port Royal to Peso da Regua | 3,964.98 mi (6,381.02 km) |
| Port Royal to Pinhal Novo | 3,958.57 mi (6,370.71 km) |
| Port Royal to Pinhel | 4,008.06 mi (6,450.35 km) |
