| Biga to Montalegre | 1,816.80 mi (2,923.86 km) |
| Biga to Montemor-o-Novo | 1,882.65 mi (3,029.83 km) |
| Biga to Montemor-o-Velho | 1,882.77 mi (3,030.02 km) |
| Biga to Montijo | 1,917.72 mi (3,086.27 km) |
| Biga to Mortagua | 1,855.83 mi (2,986.68 km) |
| Biga to Moura | 1,851.84 mi (2,980.25 km) |
| Biga to Murtosa | 1,872.46 mi (3,013.43 km) |
| Biga to Nazare | 1,911.11 mi (3,075.64 km) |
| Biga to Nelas | 1,834.95 mi (2,953.07 km) |
| Biga to Obidos | 1,919.70 mi (3,089.46 km) |
| Biga to Odemira | 1,924.40 mi (3,097.03 km) |
| Biga to Odivelas | 1,930.42 mi (3,106.71 km) |
| Biga to Oeiras | 1,939.44 mi (3,121.23 km) |
| Biga to Olhao | 1,894.17 mi (3,048.37 km) |
| Biga to Oliveira de Azemeis | 1,862.95 mi (2,998.13 km) |
