| Orbetello to Oliveira do Bairro | 1,026.67 mi (1,652.27 km) |
| Orbetello to Oliveira do Hospital | 996.85 mi (1,604.28 km) |
| Orbetello to Ourem | 1,046.05 mi (1,683.45 km) |
| Orbetello to Ovar | 1,027.92 mi (1,654.28 km) |
| Orbetello to Pacos de Ferreira | 1,010.34 mi (1,625.98 km) |
| Orbetello to Palmela | 1,087.14 mi (1,749.58 km) |
| Orbetello to Paredes | 1,007.84 mi (1,621.96 km) |
| Orbetello to Paredes de Coura | 1,010.91 mi (1,626.90 km) |
| Orbetello to Penacova | 1,019.85 mi (1,641.28 km) |
| Orbetello to Penafiel | 1,005.24 mi (1,617.79 km) |
| Orbetello to Peniche | 1,092.95 mi (1,758.94 km) |
| Orbetello to Peso da Regua | 979.93 mi (1,577.04 km) |
| Orbetello to Pinhal Novo | 1,086.29 mi (1,748.21 km) |
| Orbetello to Pinhel | 949.32 mi (1,527.78 km) |
| Orbetello to Pombal | 1,043.94 mi (1,680.06 km) |
