| Birecik to Cascais | 2,558.70 mi (4,117.83 km) |
| Birecik to Castelo Branco | 2,442.82 mi (3,931.34 km) |
| Birecik to Castro Daire | 2,452.68 mi (3,947.21 km) |
| Birecik to Celorico de Basto | 2,451.04 mi (3,944.57 km) |
| Birecik to Chamusca | 2,500.33 mi (4,023.89 km) |
| Birecik to Chaves | 2,420.53 mi (3,895.46 km) |
| Birecik to Cinfaes | 2,460.83 mi (3,960.32 km) |
| Birecik to Coimbra | 2,486.33 mi (4,001.36 km) |
| Birecik to Condeixa-a-Nova | 2,491.17 mi (4,009.16 km) |
| Birecik to Corroios | 2,546.00 mi (4,097.38 km) |
| Birecik to Coruche | 2,508.12 mi (4,036.43 km) |
| Birecik to Costa de Caparica | 2,550.01 mi (4,103.84 km) |
| Birecik to Covilha | 2,437.20 mi (3,922.30 km) |
| Birecik to Eiras | 2,485.68 mi (4,000.31 km) |
| Birecik to Elvas | 2,436.92 mi (3,921.84 km) |
