| Ommen to Oliveira do Bairro | 1,086.72 mi (1,748.91 km) |
| Ommen to Oliveira do Hospital | 1,076.64 mi (1,732.68 km) |
| Ommen to Ourem | 1,138.07 mi (1,831.55 km) |
| Ommen to Ovar | 1,071.18 mi (1,723.90 km) |
| Ommen to Pacos de Ferreira | 1,041.73 mi (1,676.51 km) |
| Ommen to Palmela | 1,210.59 mi (1,948.25 km) |
| Ommen to Paredes | 1,043.37 mi (1,679.13 km) |
| Ommen to Paredes de Coura | 1,011.49 mi (1,627.84 km) |
| Ommen to Penacova | 1,094.15 mi (1,760.86 km) |
| Ommen to Penafiel | 1,041.51 mi (1,676.15 km) |
| Ommen to Peniche | 1,179.12 mi (1,897.60 km) |
| Ommen to Peso da Regua | 1,028.28 mi (1,654.86 km) |
| Ommen to Pinhal Novo | 1,207.24 mi (1,942.86 km) |
| Ommen to Pinhel | 1,029.05 mi (1,656.10 km) |
| Ommen to Pombal | 1,124.65 mi (1,809.96 km) |
