| Middle River to Oliveira de Frades | 3,516.05 mi (5,658.53 km) |
| Middle River to Oliveira do Bairro | 3,505.90 mi (5,642.20 km) |
| Middle River to Oliveira do Hospital | 3,541.05 mi (5,698.77 km) |
| Middle River to Ourem | 3,525.62 mi (5,673.93 km) |
| Middle River to Ovar | 3,490.34 mi (5,617.15 km) |
| Middle River to Pacos de Ferreira | 3,491.35 mi (5,618.78 km) |
| Middle River to Palmela | 3,538.69 mi (5,694.97 km) |
| Middle River to Paredes | 3,496.27 mi (5,626.71 km) |
| Middle River to Paredes de Coura | 3,467.23 mi (5,579.97 km) |
| Middle River to Penacova | 3,522.92 mi (5,669.59 km) |
| Middle River to Penafiel | 3,498.50 mi (5,630.29 km) |
| Middle River to Peniche | 3,494.35 mi (5,623.61 km) |
| Middle River to Peso da Regua | 3,524.03 mi (5,671.38 km) |
| Middle River to Pinhal Novo | 3,536.22 mi (5,691.00 km) |
| Middle River to Pinhel | 3,568.31 mi (5,742.64 km) |
