| Altena to Castelo Branco | 1,076.49 mi (1,732.45 km) |
| Altena to Castro Daire | 1,032.77 mi (1,662.09 km) |
| Altena to Celorico de Basto | 1,009.99 mi (1,625.43 km) |
| Altena to Chamusca | 1,134.05 mi (1,825.07 km) |
| Altena to Chaves | 973.36 mi (1,566.47 km) |
| Altena to Cinfaes | 1,029.21 mi (1,656.35 km) |
| Altena to Coimbra | 1,085.93 mi (1,747.63 km) |
| Altena to Condeixa-a-Nova | 1,093.33 mi (1,759.55 km) |
| Altena to Corroios | 1,196.17 mi (1,925.05 km) |
| Altena to Coruche | 1,156.99 mi (1,861.99 km) |
| Altena to Costa de Caparica | 1,197.32 mi (1,926.90 km) |
| Altena to Covilha | 1,051.10 mi (1,691.58 km) |
| Altena to Eiras | 1,084.11 mi (1,744.70 km) |
| Altena to Elvas | 1,118.37 mi (1,799.84 km) |
| Altena to Entroncamento | 1,127.28 mi (1,814.18 km) |
