| Mount Vernon to Oliveira de Frades | 3,346.81 mi (5,386.17 km) |
| Mount Vernon to Oliveira do Bairro | 3,336.95 mi (5,370.30 km) |
| Mount Vernon to Oliveira do Hospital | 3,372.05 mi (5,426.79 km) |
| Mount Vernon to Ourem | 3,357.54 mi (5,403.44 km) |
| Mount Vernon to Ovar | 3,321.09 mi (5,344.79 km) |
| Mount Vernon to Pacos de Ferreira | 3,321.67 mi (5,345.71 km) |
| Mount Vernon to Palmela | 3,371.87 mi (5,426.50 km) |
| Mount Vernon to Paredes | 3,326.64 mi (5,353.71 km) |
| Mount Vernon to Paredes de Coura | 3,297.03 mi (5,306.06 km) |
| Mount Vernon to Penacova | 3,354.14 mi (5,397.96 km) |
| Mount Vernon to Penafiel | 3,328.85 mi (5,357.26 km) |
| Mount Vernon to Peniche | 3,326.85 mi (5,354.05 km) |
| Mount Vernon to Peso da Regua | 3,354.28 mi (5,398.19 km) |
| Mount Vernon to Pinhal Novo | 3,369.34 mi (5,422.42 km) |
| Mount Vernon to Pinhel | 3,398.69 mi (5,469.67 km) |
