| Cincinnati to Oliveira de Frades | 3,909.32 mi (6,291.45 km) |
| Cincinnati to Oliveira do Bairro | 3,900.26 mi (6,276.87 km) |
| Cincinnati to Oliveira do Hospital | 3,935.21 mi (6,333.10 km) |
| Cincinnati to Ourem | 3,923.04 mi (6,313.53 km) |
| Cincinnati to Ovar | 3,883.61 mi (6,250.07 km) |
| Cincinnati to Pacos de Ferreira | 3,882.89 mi (6,248.91 km) |
| Cincinnati to Palmela | 3,940.03 mi (6,340.86 km) |
| Cincinnati to Paredes | 3,887.98 mi (6,257.11 km) |
| Cincinnati to Paredes de Coura | 3,856.56 mi (6,206.54 km) |
| Cincinnati to Penacova | 3,917.89 mi (6,305.23 km) |
| Cincinnati to Penafiel | 3,890.13 mi (6,260.56 km) |
| Cincinnati to Peniche | 3,893.70 mi (6,266.30 km) |
| Cincinnati to Peso da Regua | 3,915.20 mi (6,300.91 km) |
| Cincinnati to Pinhal Novo | 3,937.37 mi (6,336.59 km) |
| Cincinnati to Pinhel | 3,960.00 mi (6,373.00 km) |
