| Onex to Oliveira de Frades | 808.25 mi (1,300.75 km) |
| Onex to Oliveira do Bairro | 829.69 mi (1,335.26 km) |
| Onex to Oliveira do Hospital | 807.87 mi (1,300.13 km) |
| Onex to Ourem | 866.60 mi (1,394.65 km) |
| Onex to Ovar | 822.72 mi (1,324.03 km) |
| Onex to Pacos de Ferreira | 798.15 mi (1,284.49 km) |
| Onex to Palmela | 926.61 mi (1,491.23 km) |
| Onex to Paredes | 797.47 mi (1,283.41 km) |
| Onex to Paredes de Coura | 784.17 mi (1,262.00 km) |
| Onex to Penacova | 829.61 mi (1,335.13 km) |
| Onex to Penafiel | 795.05 mi (1,279.51 km) |
| Onex to Peniche | 913.26 mi (1,469.76 km) |
| Onex to Peso da Regua | 773.83 mi (1,245.36 km) |
| Onex to Pinhal Novo | 924.38 mi (1,487.65 km) |
| Onex to Pinhel | 756.84 mi (1,218.02 km) |
