| Orsta to Oliveira do Bairro | 1,616.94 mi (2,602.21 km) |
| Orsta to Oliveira do Hospital | 1,617.64 mi (2,603.34 km) |
| Orsta to Ourem | 1,675.23 mi (2,696.03 km) |
| Orsta to Ovar | 1,595.96 mi (2,568.45 km) |
| Orsta to Pacos de Ferreira | 1,565.94 mi (2,520.13 km) |
| Orsta to Palmela | 1,752.07 mi (2,819.68 km) |
| Orsta to Paredes | 1,569.28 mi (2,525.51 km) |
| Orsta to Paredes de Coura | 1,526.08 mi (2,455.99 km) |
| Orsta to Penacova | 1,629.85 mi (2,622.98 km) |
| Orsta to Penafiel | 1,568.11 mi (2,523.63 km) |
| Orsta to Peniche | 1,707.55 mi (2,748.04 km) |
| Orsta to Peso da Regua | 1,562.98 mi (2,515.37 km) |
| Orsta to Pinhal Novo | 1,748.02 mi (2,813.17 km) |
| Orsta to Pinhel | 1,577.82 mi (2,539.26 km) |
| Orsta to Pombal | 1,658.58 mi (2,669.23 km) |
