| Walnut Creek to Oliveira de Frades | 5,586.89 mi (8,991.23 km) |
| Walnut Creek to Oliveira do Bairro | 5,584.15 mi (8,986.82 km) |
| Walnut Creek to Oliveira do Hospital | 5,616.09 mi (9,038.22 km) |
| Walnut Creek to Ourem | 5,622.34 mi (9,048.28 km) |
| Walnut Creek to Ovar | 5,562.59 mi (8,952.13 km) |
| Walnut Creek to Pacos de Ferreira | 5,552.73 mi (8,936.25 km) |
| Walnut Creek to Palmela | 5,660.21 mi (9,109.23 km) |
| Walnut Creek to Paredes | 5,558.40 mi (8,945.39 km) |
| Walnut Creek to Paredes de Coura | 5,516.27 mi (8,877.58 km) |
| Walnut Creek to Penacova | 5,604.08 mi (9,018.90 km) |
| Walnut Creek to Penafiel | 5,560.00 mi (8,947.95 km) |
| Walnut Creek to Peniche | 5,605.08 mi (9,020.51 km) |
| Walnut Creek to Peso da Regua | 5,581.20 mi (8,982.08 km) |
| Walnut Creek to Pinhal Novo | 5,656.64 mi (9,103.48 km) |
| Walnut Creek to Pinhel | 5,626.23 mi (9,054.54 km) |
