| Somain to Bombarral | 976.36 mi (1,571.30 km) |
| Somain to Bougado | 842.45 mi (1,355.80 km) |
| Somain to Braga | 826.43 mi (1,330.02 km) |
| Somain to Braganca | 760.53 mi (1,223.95 km) |
| Somain to Cabeceiras de Basto | 814.47 mi (1,310.76 km) |
| Somain to Cacem | 1,009.49 mi (1,624.61 km) |
| Somain to Cadaval | 976.69 mi (1,571.83 km) |
| Somain to Caldas da Rainha | 967.84 mi (1,557.59 km) |
| Somain to Calheta | 1,602.21 mi (2,578.51 km) |
| Somain to Camara de Lobos | 1,597.79 mi (2,571.40 km) |
| Somain to Canico | 1,596.72 mi (2,569.68 km) |
| Somain to Cantanhede | 898.24 mi (1,445.58 km) |
| Somain to Carregal do Sal | 875.31 mi (1,408.67 km) |
| Somain to Cartaxo | 972.08 mi (1,564.41 km) |
| Somain to Cascais | 1,016.77 mi (1,636.34 km) |
