| Opera to Bombarral | 1,026.13 mi (1,651.39 km) |
| Opera to Bougado | 933.42 mi (1,502.20 km) |
| Opera to Braga | 921.04 mi (1,482.27 km) |
| Opera to Braganca | 835.09 mi (1,343.95 km) |
| Opera to Cabeceiras de Basto | 902.26 mi (1,452.05 km) |
| Opera to Cacem | 1,050.87 mi (1,691.21 km) |
| Opera to Cadaval | 1,024.79 mi (1,649.24 km) |
| Opera to Caldas da Rainha | 1,020.41 mi (1,642.19 km) |
| Opera to Calheta | 1,652.28 mi (2,659.09 km) |
| Opera to Camara de Lobos | 1,645.24 mi (2,647.76 km) |
| Opera to Canico | 1,641.94 mi (2,642.45 km) |
| Opera to Cantanhede | 964.25 mi (1,551.82 km) |
| Opera to Carregal do Sal | 933.68 mi (1,502.61 km) |
| Opera to Cartaxo | 1,013.14 mi (1,630.50 km) |
| Opera to Cascais | 1,058.41 mi (1,703.34 km) |
