| Oss to Oliveira do Bairro | 1,023.30 mi (1,646.84 km) |
| Oss to Oliveira do Hospital | 1,012.89 mi (1,630.09 km) |
| Oss to Ourem | 1,074.36 mi (1,729.01 km) |
| Oss to Ovar | 1,007.98 mi (1,622.19 km) |
| Oss to Pacos de Ferreira | 978.62 mi (1,574.93 km) |
| Oss to Palmela | 1,146.68 mi (1,845.41 km) |
| Oss to Paredes | 980.18 mi (1,577.45 km) |
| Oss to Paredes de Coura | 948.85 mi (1,527.02 km) |
| Oss to Penacova | 1,030.54 mi (1,658.49 km) |
| Oss to Penafiel | 978.30 mi (1,574.42 km) |
| Oss to Peniche | 1,115.61 mi (1,795.40 km) |
| Oss to Peso da Regua | 964.81 mi (1,552.71 km) |
| Oss to Pinhal Novo | 1,143.35 mi (1,840.05 km) |
| Oss to Pinhel | 965.16 mi (1,553.28 km) |
| Oss to Pombal | 1,061.05 mi (1,707.60 km) |
