| Trowbridge to Oliveira de Frades | 786.06 mi (1,265.04 km) |
| Trowbridge to Oliveira do Bairro | 804.64 mi (1,294.94 km) |
| Trowbridge to Oliveira do Hospital | 804.16 mi (1,294.16 km) |
| Trowbridge to Ourem | 862.34 mi (1,387.80 km) |
| Trowbridge to Ovar | 784.39 mi (1,262.35 km) |
| Trowbridge to Pacos de Ferreira | 754.24 mi (1,213.82 km) |
| Trowbridge to Palmela | 939.01 mi (1,511.18 km) |
| Trowbridge to Paredes | 757.32 mi (1,218.79 km) |
| Trowbridge to Paredes de Coura | 715.87 mi (1,152.09 km) |
| Trowbridge to Penacova | 816.91 mi (1,314.69 km) |
| Trowbridge to Penafiel | 756.04 mi (1,216.73 km) |
| Trowbridge to Peniche | 896.12 mi (1,442.16 km) |
| Trowbridge to Peso da Regua | 749.84 mi (1,206.74 km) |
| Trowbridge to Pinhal Novo | 935.02 mi (1,504.77 km) |
| Trowbridge to Pinhel | 763.95 mi (1,229.46 km) |
