| Orsova to Oliveira de Frades | 1,567.17 mi (2,522.11 km) |
| Orsova to Oliveira do Bairro | 1,587.58 mi (2,554.96 km) |
| Orsova to Oliveira do Hospital | 1,560.19 mi (2,510.89 km) |
| Orsova to Ourem | 1,613.08 mi (2,596.00 km) |
| Orsova to Ovar | 1,585.67 mi (2,551.89 km) |
| Orsova to Pacos de Ferreira | 1,564.94 mi (2,518.53 km) |
| Orsova to Palmela | 1,659.68 mi (2,671.00 km) |
| Orsova to Paredes | 1,563.19 mi (2,515.71 km) |
| Orsova to Paredes de Coura | 1,558.78 mi (2,508.61 km) |
| Orsova to Penacova | 1,583.06 mi (2,547.70 km) |
| Orsova to Penafiel | 1,560.63 mi (2,511.59 km) |
| Orsova to Peniche | 1,660.44 mi (2,672.21 km) |
| Orsova to Peso da Regua | 1,536.66 mi (2,473.01 km) |
| Orsova to Pinhal Novo | 1,658.50 mi (2,669.09 km) |
| Orsova to Pinhel | 1,510.76 mi (2,431.33 km) |
