| Oregon to Oliveira de Frades | 3,779.99 mi (6,083.30 km) |
| Oregon to Oliveira do Bairro | 3,771.71 mi (6,069.98 km) |
| Oregon to Oliveira do Hospital | 3,806.44 mi (6,125.87 km) |
| Oregon to Ourem | 3,796.68 mi (6,110.17 km) |
| Oregon to Ovar | 3,754.32 mi (6,042.00 km) |
| Oregon to Pacos de Ferreira | 3,752.41 mi (6,038.93 km) |
| Oregon to Palmela | 3,816.70 mi (6,142.38 km) |
| Oregon to Paredes | 3,757.61 mi (6,047.29 km) |
| Oregon to Paredes de Coura | 3,724.66 mi (5,994.26 km) |
| Oregon to Penacova | 3,789.73 mi (6,098.98 km) |
| Oregon to Penafiel | 3,759.69 mi (6,050.64 km) |
| Oregon to Peniche | 3,768.87 mi (6,065.41 km) |
| Oregon to Peso da Regua | 3,784.41 mi (6,090.41 km) |
| Oregon to Pinhal Novo | 3,813.90 mi (6,137.87 km) |
| Oregon to Pinhel | 3,829.47 mi (6,162.94 km) |
