| Pittsburgh to Oliveira de Frades | 3,654.25 mi (5,880.94 km) |
| Pittsburgh to Oliveira do Bairro | 3,645.02 mi (5,866.10 km) |
| Pittsburgh to Oliveira do Hospital | 3,680.00 mi (5,922.39 km) |
| Pittsburgh to Ourem | 3,667.38 mi (5,902.08 km) |
| Pittsburgh to Ovar | 3,628.53 mi (5,839.56 km) |
| Pittsburgh to Pacos de Ferreira | 3,628.09 mi (5,838.84 km) |
| Pittsburgh to Palmela | 3,683.91 mi (5,928.69 km) |
| Pittsburgh to Paredes | 3,633.15 mi (5,847.00 km) |
| Pittsburgh to Paredes de Coura | 3,602.13 mi (5,797.07 km) |
| Pittsburgh to Penacova | 3,662.56 mi (5,894.32 km) |
| Pittsburgh to Penafiel | 3,635.31 mi (5,850.47 km) |
| Pittsburgh to Peniche | 3,637.79 mi (5,854.46 km) |
| Pittsburgh to Peso da Regua | 3,660.47 mi (5,890.95 km) |
| Pittsburgh to Pinhal Novo | 3,681.28 mi (5,924.45 km) |
| Pittsburgh to Pinhel | 3,705.19 mi (5,962.93 km) |
