| Castano Primo to Castelo Branco | 914.00 mi (1,470.95 km) |
| Castano Primo to Castro Daire | 897.98 mi (1,445.16 km) |
| Castano Primo to Celorico de Basto | 886.71 mi (1,427.02 km) |
| Castano Primo to Chamusca | 975.49 mi (1,569.91 km) |
| Castano Primo to Chaves | 851.70 mi (1,370.68 km) |
| Castano Primo to Cinfaes | 901.28 mi (1,450.47 km) |
| Castano Primo to Coimbra | 943.11 mi (1,517.78 km) |
| Castano Primo to Condeixa-a-Nova | 949.53 mi (1,528.11 km) |
| Castano Primo to Corroios | 1,033.04 mi (1,662.51 km) |
| Castano Primo to Coruche | 991.97 mi (1,596.43 km) |
| Castano Primo to Costa de Caparica | 1,035.73 mi (1,666.84 km) |
| Castano Primo to Covilha | 897.82 mi (1,444.90 km) |
| Castano Primo to Eiras | 941.84 mi (1,515.74 km) |
| Castano Primo to Elvas | 933.94 mi (1,503.02 km) |
| Castano Primo to Entroncamento | 970.65 mi (1,562.10 km) |
