| Preddvor to Montalegre | 1,141.16 mi (1,836.52 km) |
| Preddvor to Montemor-o-Novo | 1,263.16 mi (2,032.85 km) |
| Preddvor to Montemor-o-Velho | 1,232.48 mi (1,983.49 km) |
| Preddvor to Montijo | 1,293.27 mi (2,081.32 km) |
| Preddvor to Mortagua | 1,202.94 mi (1,935.95 km) |
| Preddvor to Moura | 1,247.74 mi (2,008.05 km) |
| Preddvor to Murtosa | 1,212.38 mi (1,951.13 km) |
| Preddvor to Nazare | 1,269.00 mi (2,042.26 km) |
| Preddvor to Nelas | 1,182.39 mi (1,902.87 km) |
| Preddvor to Obidos | 1,281.44 mi (2,062.27 km) |
| Preddvor to Odemira | 1,322.50 mi (2,128.35 km) |
| Preddvor to Odivelas | 1,302.30 mi (2,095.86 km) |
| Preddvor to Oeiras | 1,312.45 mi (2,112.19 km) |
| Preddvor to Olhao | 1,309.26 mi (2,107.05 km) |
| Preddvor to Oliveira de Azemeis | 1,201.70 mi (1,933.94 km) |
