| Biga to Benavente | 1,907.60 mi (3,069.99 km) |
| Biga to Bombarral | 1,921.04 mi (3,091.62 km) |
| Biga to Bougado | 1,861.23 mi (2,995.36 km) |
| Biga to Braga | 1,851.72 mi (2,980.05 km) |
| Biga to Braganca | 1,764.31 mi (2,839.39 km) |
| Biga to Cabeceiras de Basto | 1,831.31 mi (2,947.20 km) |
| Biga to Cacem | 1,937.46 mi (3,118.04 km) |
| Biga to Cadaval | 1,918.74 mi (3,087.92 km) |
| Biga to Caldas da Rainha | 1,917.76 mi (3,086.34 km) |
| Biga to Calheta | 2,494.30 mi (4,014.18 km) |
| Biga to Camara de Lobos | 2,485.29 mi (3,999.69 km) |
| Biga to Canico | 2,480.14 mi (3,991.40 km) |
| Biga to Cantanhede | 1,875.64 mi (3,018.55 km) |
| Biga to Carregal do Sal | 1,843.80 mi (2,967.31 km) |
| Biga to Cartaxo | 1,903.66 mi (3,063.64 km) |
