| Sion to Cascais | 998.28 mi (1,606.57 km) |
| Sion to Castelo Branco | 869.97 mi (1,400.08 km) |
| Sion to Castro Daire | 848.09 mi (1,364.87 km) |
| Sion to Celorico de Basto | 834.49 mi (1,342.97 km) |
| Sion to Chamusca | 931.31 mi (1,498.80 km) |
| Sion to Chaves | 798.71 mi (1,285.40 km) |
| Sion to Cinfaes | 850.11 mi (1,368.12 km) |
| Sion to Coimbra | 895.34 mi (1,440.90 km) |
| Sion to Condeixa-a-Nova | 902.02 mi (1,451.67 km) |
| Sion to Corroios | 990.39 mi (1,593.89 km) |
| Sion to Coruche | 949.34 mi (1,527.81 km) |
| Sion to Costa de Caparica | 992.78 mi (1,597.73 km) |
| Sion to Covilha | 851.65 mi (1,370.59 km) |
| Sion to Eiras | 893.94 mi (1,438.66 km) |
| Sion to Elvas | 895.01 mi (1,440.38 km) |
