| Altena to Bombarral | 1,160.79 mi (1,868.11 km) |
| Altena to Bougado | 1,031.88 mi (1,660.65 km) |
| Altena to Braga | 1,016.18 mi (1,635.39 km) |
| Altena to Braganca | 945.54 mi (1,521.70 km) |
| Altena to Cabeceiras de Basto | 1,002.90 mi (1,614.00 km) |
| Altena to Cacem | 1,192.84 mi (1,919.70 km) |
| Altena to Cadaval | 1,160.81 mi (1,868.15 km) |
| Altena to Caldas da Rainha | 1,152.65 mi (1,855.01 km) |
| Altena to Calheta | 1,792.05 mi (2,884.03 km) |
| Altena to Camara de Lobos | 1,787.20 mi (2,876.22 km) |
| Altena to Canico | 1,785.77 mi (2,873.92 km) |
| Altena to Cantanhede | 1,084.38 mi (1,745.14 km) |
| Altena to Carregal do Sal | 1,059.67 mi (1,705.37 km) |
| Altena to Cartaxo | 1,154.82 mi (1,858.50 km) |
| Altena to Cascais | 1,200.28 mi (1,931.66 km) |
