| Signa to Castelo Branco | 994.04 mi (1,599.74 km) |
| Signa to Castro Daire | 989.88 mi (1,593.06 km) |
| Signa to Celorico de Basto | 983.43 mi (1,582.68 km) |
| Signa to Chamusca | 1,054.77 mi (1,697.49 km) |
| Signa to Chaves | 950.52 mi (1,529.71 km) |
| Signa to Cinfaes | 995.67 mi (1,602.37 km) |
| Signa to Coimbra | 1,030.06 mi (1,657.72 km) |
| Signa to Condeixa-a-Nova | 1,035.84 mi (1,667.02 km) |
| Signa to Corroios | 1,108.33 mi (1,783.68 km) |
| Signa to Coruche | 1,067.90 mi (1,718.61 km) |
| Signa to Costa de Caparica | 1,111.59 mi (1,788.93 km) |
| Signa to Covilha | 982.37 mi (1,580.97 km) |
| Signa to Eiras | 1,029.06 mi (1,656.12 km) |
| Signa to Elvas | 1,003.47 mi (1,614.93 km) |
| Signa to Entroncamento | 1,050.91 mi (1,691.28 km) |
