| Central Islip to Oliveira de Frades | 3,319.64 mi (5,342.44 km) |
| Central Islip to Oliveira do Bairro | 3,309.64 mi (5,326.35 km) |
| Central Islip to Oliveira do Hospital | 3,344.77 mi (5,382.88 km) |
| Central Islip to Ourem | 3,329.84 mi (5,358.85 km) |
| Central Islip to Ovar | 3,293.92 mi (5,301.06 km) |
| Central Islip to Pacos de Ferreira | 3,294.72 mi (5,302.34 km) |
| Central Islip to Palmela | 3,343.66 mi (5,381.09 km) |
| Central Islip to Paredes | 3,299.67 mi (5,310.30 km) |
| Central Islip to Paredes de Coura | 3,270.36 mi (5,263.14 km) |
| Central Islip to Penacova | 3,326.75 mi (5,353.89 km) |
| Central Islip to Penafiel | 3,301.88 mi (5,313.87 km) |
| Central Islip to Peniche | 3,298.90 mi (5,309.07 km) |
| Central Islip to Peso da Regua | 3,327.37 mi (5,354.88 km) |
| Central Islip to Pinhal Novo | 3,341.15 mi (5,377.06 km) |
| Central Islip to Pinhel | 3,371.71 mi (5,426.25 km) |
