| Castano Primo to Bombarral | 1,009.09 mi (1,623.98 km) |
| Castano Primo to Bougado | 914.42 mi (1,471.62 km) |
| Castano Primo to Braga | 901.85 mi (1,451.39 km) |
| Castano Primo to Braganca | 816.23 mi (1,313.59 km) |
| Castano Primo to Cabeceiras de Basto | 883.24 mi (1,421.44 km) |
| Castano Primo to Cacem | 1,034.28 mi (1,664.51 km) |
| Castano Primo to Cadaval | 1,007.82 mi (1,621.93 km) |
| Castano Primo to Caldas da Rainha | 1,003.24 mi (1,614.56 km) |
| Castano Primo to Calheta | 1,636.79 mi (2,634.15 km) |
| Castano Primo to Camara de Lobos | 1,629.85 mi (2,622.98 km) |
| Castano Primo to Canico | 1,626.64 mi (2,617.83 km) |
| Castano Primo to Cantanhede | 946.32 mi (1,522.95 km) |
| Castano Primo to Carregal do Sal | 915.91 mi (1,474.02 km) |
| Castano Primo to Cartaxo | 996.42 mi (1,603.58 km) |
| Castano Primo to Cascais | 1,041.83 mi (1,676.67 km) |
