| Skien to Castelo Branco | 1,532.67 mi (2,466.59 km) |
| Skien to Castro Daire | 1,473.76 mi (2,371.79 km) |
| Skien to Celorico de Basto | 1,445.06 mi (2,325.60 km) |
| Skien to Chamusca | 1,583.26 mi (2,548.01 km) |
| Skien to Chaves | 1,411.01 mi (2,270.80 km) |
| Skien to Cinfaes | 1,465.71 mi (2,358.83 km) |
| Skien to Coimbra | 1,527.90 mi (2,458.91 km) |
| Skien to Condeixa-a-Nova | 1,535.39 mi (2,470.97 km) |
| Skien to Corroios | 1,644.26 mi (2,646.18 km) |
| Skien to Coruche | 1,609.04 mi (2,589.51 km) |
| Skien to Costa de Caparica | 1,644.24 mi (2,646.14 km) |
| Skien to Covilha | 1,503.14 mi (2,419.07 km) |
| Skien to Eiras | 1,525.84 mi (2,455.60 km) |
| Skien to Elvas | 1,585.94 mi (2,552.32 km) |
| Skien to Entroncamento | 1,575.66 mi (2,535.77 km) |
