| Siegburg to Castelo Branco | 1,038.64 mi (1,671.54 km) |
| Siegburg to Castro Daire | 995.80 mi (1,602.59 km) |
| Siegburg to Celorico de Basto | 973.41 mi (1,566.55 km) |
| Siegburg to Chamusca | 1,096.46 mi (1,764.58 km) |
| Siegburg to Chaves | 936.71 mi (1,507.50 km) |
| Siegburg to Cinfaes | 992.50 mi (1,597.27 km) |
| Siegburg to Coimbra | 1,048.79 mi (1,687.87 km) |
| Siegburg to Condeixa-a-Nova | 1,056.18 mi (1,699.76 km) |
| Siegburg to Corroios | 1,158.54 mi (1,864.49 km) |
| Siegburg to Coruche | 1,119.22 mi (1,801.22 km) |
| Siegburg to Costa de Caparica | 1,159.75 mi (1,866.43 km) |
| Siegburg to Covilha | 1,013.50 mi (1,631.08 km) |
| Siegburg to Eiras | 1,046.99 mi (1,684.97 km) |
| Siegburg to Elvas | 1,079.93 mi (1,737.98 km) |
| Siegburg to Entroncamento | 1,089.74 mi (1,753.77 km) |
