| Aiken to Oliveira de Frades | 3,963.42 mi (6,378.51 km) |
| Aiken to Oliveira do Bairro | 3,951.99 mi (6,360.12 km) |
| Aiken to Oliveira do Hospital | 3,987.24 mi (6,416.85 km) |
| Aiken to Ourem | 3,967.68 mi (6,385.36 km) |
| Aiken to Ovar | 3,937.83 mi (6,337.32 km) |
| Aiken to Pacos de Ferreira | 3,940.88 mi (6,342.23 km) |
| Aiken to Palmela | 3,975.18 mi (6,397.43 km) |
| Aiken to Paredes | 3,945.59 mi (6,349.82 km) |
| Aiken to Paredes de Coura | 3,919.37 mi (6,307.62 km) |
| Aiken to Penacova | 3,968.18 mi (6,386.17 km) |
| Aiken to Penafiel | 3,947.90 mi (6,353.54 km) |
| Aiken to Peniche | 3,933.91 mi (6,331.01 km) |
| Aiken to Peso da Regua | 3,973.87 mi (6,395.32 km) |
| Aiken to Pinhal Novo | 3,973.00 mi (6,393.93 km) |
| Aiken to Pinhel | 4,017.36 mi (6,465.31 km) |
