| Opglabbeek to Oliveira do Bairro | 991.73 mi (1,596.04 km) |
| Opglabbeek to Oliveira do Hospital | 980.05 mi (1,577.25 km) |
| Opglabbeek to Ourem | 1,041.59 mi (1,676.28 km) |
| Opglabbeek to Ovar | 977.21 mi (1,572.66 km) |
| Opglabbeek to Pacos de Ferreira | 948.15 mi (1,525.90 km) |
| Opglabbeek to Palmela | 1,112.98 mi (1,791.17 km) |
| Opglabbeek to Paredes | 949.49 mi (1,528.05 km) |
| Opglabbeek to Paredes de Coura | 919.85 mi (1,480.36 km) |
| Opglabbeek to Penacova | 998.24 mi (1,606.51 km) |
| Opglabbeek to Penafiel | 947.54 mi (1,524.91 km) |
| Opglabbeek to Peniche | 1,083.64 mi (1,743.96 km) |
| Opglabbeek to Peso da Regua | 933.12 mi (1,501.72 km) |
| Opglabbeek to Pinhal Novo | 1,109.75 mi (1,785.97 km) |
| Opglabbeek to Pinhel | 931.67 mi (1,499.37 km) |
| Opglabbeek to Pombal | 1,028.77 mi (1,655.65 km) |
