| Cayey to Cascais | 3,665.29 mi (5,898.72 km) |
| Cayey to Castelo Branco | 3,775.02 mi (6,075.31 km) |
| Cayey to Castro Daire | 3,760.16 mi (6,051.39 km) |
| Cayey to Celorico de Basto | 3,760.63 mi (6,052.15 km) |
| Cayey to Chamusca | 3,719.74 mi (5,986.35 km) |
| Cayey to Chaves | 3,790.71 mi (6,100.56 km) |
| Cayey to Cinfaes | 3,751.41 mi (6,037.31 km) |
| Cayey to Coimbra | 3,728.93 mi (6,001.13 km) |
| Cayey to Condeixa-a-Nova | 3,724.49 mi (5,993.98 km) |
| Cayey to Corroios | 3,678.97 mi (5,920.72 km) |
| Cayey to Coruche | 3,714.73 mi (5,978.28 km) |
| Cayey to Costa de Caparica | 3,674.62 mi (5,913.73 km) |
| Cayey to Covilha | 3,778.18 mi (6,080.40 km) |
| Cayey to Eiras | 3,729.44 mi (6,001.95 km) |
| Cayey to Elvas | 3,787.92 mi (6,096.06 km) |
