| Orbassano to Oliveira do Bairro | 868.82 mi (1,398.23 km) |
| Orbassano to Oliveira do Hospital | 843.82 mi (1,358.00 km) |
| Orbassano to Ourem | 899.94 mi (1,448.32 km) |
| Orbassano to Ovar | 864.73 mi (1,391.65 km) |
| Orbassano to Pacos de Ferreira | 842.41 mi (1,355.73 km) |
| Orbassano to Palmela | 954.11 mi (1,535.49 km) |
| Orbassano to Paredes | 841.06 mi (1,353.55 km) |
| Orbassano to Paredes de Coura | 833.66 mi (1,341.64 km) |
| Orbassano to Penacova | 866.31 mi (1,394.19 km) |
| Orbassano to Penafiel | 838.54 mi (1,349.50 km) |
| Orbassano to Peniche | 947.26 mi (1,524.47 km) |
| Orbassano to Peso da Regua | 815.53 mi (1,312.47 km) |
| Orbassano to Pinhal Novo | 952.33 mi (1,532.63 km) |
| Orbassano to Pinhel | 793.30 mi (1,276.70 km) |
| Orbassano to Pombal | 893.88 mi (1,438.57 km) |
