| Signa to Bombarral | 1,090.02 mi (1,754.22 km) |
| Signa to Bougado | 1,012.17 mi (1,628.93 km) |
| Signa to Braga | 1,001.23 mi (1,611.32 km) |
| Signa to Braganca | 913.85 mi (1,470.69 km) |
| Signa to Cabeceiras de Basto | 981.44 mi (1,579.48 km) |
| Signa to Cacem | 1,111.47 mi (1,788.74 km) |
| Signa to Cadaval | 1,088.25 mi (1,751.38 km) |
| Signa to Caldas da Rainha | 1,085.32 mi (1,746.65 km) |
| Signa to Calheta | 1,701.81 mi (2,738.80 km) |
| Signa to Camara de Lobos | 1,694.08 mi (2,726.35 km) |
| Signa to Canico | 1,690.15 mi (2,720.03 km) |
| Signa to Cantanhede | 1,035.03 mi (1,665.73 km) |
| Signa to Carregal do Sal | 1,003.57 mi (1,615.09 km) |
| Signa to Cartaxo | 1,075.00 mi (1,730.05 km) |
| Signa to Cascais | 1,118.83 mi (1,800.58 km) |
