| Biga to Santarem | 1,897.22 mi (3,053.28 km) |
| Biga to Santiago do Cacem | 1,919.47 mi (3,089.09 km) |
| Biga to Santo Andre | 1,921.46 mi (3,092.29 km) |
| Biga to Santo Tirso | 1,856.55 mi (2,987.83 km) |
| Biga to Sao Bras de Alportel | 1,893.81 mi (3,047.80 km) |
| Biga to Sao Felix da Marinha | 1,868.12 mi (3,006.46 km) |
| Biga to Sao Joao da Madeira | 1,862.94 mi (2,998.12 km) |
| Biga to Sao Joao de Ver | 1,865.42 mi (3,002.10 km) |
| Biga to Sao Mamede de Infesta | 1,864.94 mi (3,001.32 km) |
| Biga to Sao Pedro do Sul | 1,843.10 mi (2,966.18 km) |
| Biga to Satao | 1,826.15 mi (2,938.91 km) |
| Biga to Seia | 1,828.59 mi (2,942.84 km) |
| Biga to Senhora da Hora | 1,867.71 mi (3,005.80 km) |
| Biga to Serpa | 1,863.17 mi (2,998.48 km) |
| Biga to Serta | 1,857.94 mi (2,990.06 km) |
