| Biga to Cascais | 1,944.36 mi (3,129.14 km) |
| Biga to Castelo Branco | 1,826.58 mi (2,939.60 km) |
| Biga to Castro Daire | 1,834.36 mi (2,952.12 km) |
| Biga to Celorico de Basto | 1,832.11 mi (2,948.49 km) |
| Biga to Chamusca | 1,884.80 mi (3,033.28 km) |
| Biga to Chaves | 1,801.30 mi (2,898.92 km) |
| Biga to Cinfaes | 1,842.21 mi (2,964.75 km) |
| Biga to Coimbra | 1,869.01 mi (3,007.88 km) |
| Biga to Condeixa-a-Nova | 1,874.01 mi (3,015.93 km) |
| Biga to Corroios | 1,932.01 mi (3,109.27 km) |
| Biga to Coruche | 1,893.54 mi (3,047.36 km) |
| Biga to Costa de Caparica | 1,935.90 mi (3,115.53 km) |
| Biga to Covilha | 1,820.00 mi (2,929.01 km) |
| Biga to Eiras | 1,868.31 mi (3,006.75 km) |
| Biga to Elvas | 1,823.26 mi (2,934.25 km) |
