| Middle Island to Cascais | 3,299.81 mi (5,310.53 km) |
| Middle Island to Castelo Branco | 3,362.51 mi (5,411.43 km) |
| Middle Island to Castro Daire | 3,312.10 mi (5,330.30 km) |
| Middle Island to Celorico de Basto | 3,296.16 mi (5,304.65 km) |
| Middle Island to Chamusca | 3,327.51 mi (5,355.12 km) |
| Middle Island to Chaves | 3,312.16 mi (5,330.40 km) |
| Middle Island to Cinfaes | 3,297.17 mi (5,306.29 km) |
| Middle Island to Coimbra | 3,306.56 mi (5,321.40 km) |
| Middle Island to Condeixa-a-Nova | 3,305.67 mi (5,319.97 km) |
| Middle Island to Corroios | 3,315.31 mi (5,335.48 km) |
| Middle Island to Coruche | 3,336.36 mi (5,369.36 km) |
| Middle Island to Costa de Caparica | 3,310.29 mi (5,327.39 km) |
| Middle Island to Covilha | 3,349.65 mi (5,390.75 km) |
| Middle Island to Eiras | 3,305.98 mi (5,320.46 km) |
| Middle Island to Elvas | 3,406.40 mi (5,482.07 km) |
