| Opera to Castelo Branco | 930.81 mi (1,497.99 km) |
| Opera to Castro Daire | 916.25 mi (1,474.56 km) |
| Opera to Celorico de Basto | 905.56 mi (1,457.35 km) |
| Opera to Chamusca | 992.28 mi (1,596.92 km) |
| Opera to Chaves | 870.76 mi (1,401.35 km) |
| Opera to Cinfaes | 919.86 mi (1,480.37 km) |
| Opera to Coimbra | 960.82 mi (1,546.29 km) |
| Opera to Condeixa-a-Nova | 967.17 mi (1,556.50 km) |
| Opera to Corroios | 1,049.38 mi (1,688.82 km) |
| Opera to Coruche | 1,008.35 mi (1,622.79 km) |
| Opera to Costa de Caparica | 1,052.15 mi (1,693.27 km) |
| Opera to Covilha | 915.17 mi (1,472.83 km) |
| Opera to Eiras | 959.58 mi (1,544.30 km) |
| Opera to Elvas | 949.42 mi (1,527.94 km) |
| Opera to Entroncamento | 987.55 mi (1,589.31 km) |
