| Allentown to Oliveira de Frades | 3,434.68 mi (5,527.58 km) |
| Allentown to Oliveira do Bairro | 3,424.90 mi (5,511.85 km) |
| Allentown to Oliveira do Hospital | 3,459.99 mi (5,568.32 km) |
| Allentown to Ourem | 3,445.72 mi (5,545.36 km) |
| Allentown to Ovar | 3,408.96 mi (5,486.19 km) |
| Allentown to Pacos de Ferreira | 3,409.40 mi (5,486.89 km) |
| Allentown to Palmela | 3,460.31 mi (5,568.84 km) |
| Allentown to Paredes | 3,414.38 mi (5,494.91 km) |
| Allentown to Paredes de Coura | 3,384.56 mi (5,446.93 km) |
| Allentown to Penacova | 3,442.14 mi (5,539.59 km) |
| Allentown to Penafiel | 3,416.58 mi (5,498.45 km) |
| Allentown to Peniche | 3,415.17 mi (5,496.19 km) |
| Allentown to Peso da Regua | 3,441.97 mi (5,539.32 km) |
| Allentown to Pinhal Novo | 3,457.77 mi (5,564.75 km) |
| Allentown to Pinhel | 3,486.43 mi (5,610.87 km) |
