| Giessen to Castelo Branco | 1,078.63 mi (1,735.88 km) |
| Giessen to Castro Daire | 1,039.08 mi (1,672.24 km) |
| Giessen to Celorico de Basto | 1,017.94 mi (1,638.22 km) |
| Giessen to Chamusca | 1,137.38 mi (1,830.44 km) |
| Giessen to Chaves | 981.14 mi (1,578.99 km) |
| Giessen to Cinfaes | 1,036.61 mi (1,668.27 km) |
| Giessen to Coimbra | 1,091.45 mi (1,756.52 km) |
| Giessen to Condeixa-a-Nova | 1,098.76 mi (1,768.29 km) |
| Giessen to Corroios | 1,199.25 mi (1,930.00 km) |
| Giessen to Coruche | 1,159.43 mi (1,865.92 km) |
| Giessen to Costa de Caparica | 1,200.67 mi (1,932.28 km) |
| Giessen to Covilha | 1,054.53 mi (1,697.10 km) |
| Giessen to Eiras | 1,089.71 mi (1,753.71 km) |
| Giessen to Elvas | 1,117.15 mi (1,797.88 km) |
| Giessen to Entroncamento | 1,130.88 mi (1,819.97 km) |
