| Biddeford to Cascais | 3,124.14 mi (5,027.81 km) |
| Biddeford to Castelo Branco | 3,181.82 mi (5,120.65 km) |
| Biddeford to Castro Daire | 3,128.92 mi (5,035.52 km) |
| Biddeford to Celorico de Basto | 3,111.77 mi (5,007.90 km) |
| Biddeford to Chamusca | 3,149.06 mi (5,067.92 km) |
| Biddeford to Chaves | 3,126.39 mi (5,031.44 km) |
| Biddeford to Cinfaes | 3,113.65 mi (5,010.93 km) |
| Biddeford to Coimbra | 3,125.69 mi (5,030.32 km) |
| Biddeford to Condeixa-a-Nova | 3,125.13 mi (5,029.41 km) |
| Biddeford to Corroios | 3,139.60 mi (5,052.70 km) |
| Biddeford to Coruche | 3,159.04 mi (5,083.99 km) |
| Biddeford to Costa de Caparica | 3,134.59 mi (5,044.63 km) |
| Biddeford to Covilha | 3,167.73 mi (5,097.96 km) |
| Biddeford to Eiras | 3,125.02 mi (5,029.23 km) |
| Biddeford to Elvas | 3,227.93 mi (5,194.84 km) |
