| Piraeus to Oliveira do Bairro | 1,720.12 mi (2,768.27 km) |
| Piraeus to Oliveira do Hospital | 1,687.58 mi (2,715.89 km) |
| Piraeus to Ourem | 1,729.40 mi (2,783.20 km) |
| Piraeus to Ovar | 1,725.30 mi (2,776.59 km) |
| Piraeus to Pacos de Ferreira | 1,711.52 mi (2,754.43 km) |
| Piraeus to Palmela | 1,757.11 mi (2,827.80 km) |
| Piraeus to Paredes | 1,708.30 mi (2,749.24 km) |
| Piraeus to Paredes de Coura | 1,718.13 mi (2,765.07 km) |
| Piraeus to Penacova | 1,710.18 mi (2,752.27 km) |
| Piraeus to Penafiel | 1,705.72 mi (2,745.09 km) |
| Piraeus to Peniche | 1,774.25 mi (2,855.38 km) |
| Piraeus to Peso da Regua | 1,679.50 mi (2,702.89 km) |
| Piraeus to Pinhal Novo | 1,757.18 mi (2,827.91 km) |
| Piraeus to Pinhel | 1,643.91 mi (2,645.61 km) |
| Piraeus to Pombal | 1,730.65 mi (2,785.22 km) |
