| Trowbridge to Montalegre | 707.23 mi (1,138.17 km) |
| Trowbridge to Montemor-o-Novo | 922.56 mi (1,484.72 km) |
| Trowbridge to Montemor-o-Velho | 830.66 mi (1,336.82 km) |
| Trowbridge to Montijo | 931.35 mi (1,498.86 km) |
| Trowbridge to Mortagua | 805.42 mi (1,296.20 km) |
| Trowbridge to Moura | 946.13 mi (1,522.65 km) |
| Trowbridge to Murtosa | 793.01 mi (1,276.23 km) |
| Trowbridge to Nazare | 874.39 mi (1,407.20 km) |
| Trowbridge to Nelas | 793.58 mi (1,277.14 km) |
| Trowbridge to Obidos | 891.77 mi (1,435.16 km) |
| Trowbridge to Odemira | 999.66 mi (1,608.80 km) |
| Trowbridge to Odivelas | 929.16 mi (1,495.33 km) |
| Trowbridge to Oeiras | 938.56 mi (1,510.47 km) |
| Trowbridge to Olhao | 1,025.54 mi (1,650.45 km) |
| Trowbridge to Oliveira de Azemeis | 783.21 mi (1,260.45 km) |
