| Ianca to Cascais | 1,930.23 mi (3,106.41 km) |
| Ianca to Castelo Branco | 1,805.02 mi (2,904.89 km) |
| Ianca to Castro Daire | 1,797.72 mi (2,893.15 km) |
| Ianca to Celorico de Basto | 1,789.09 mi (2,879.26 km) |
| Ianca to Chamusca | 1,865.93 mi (3,002.92 km) |
| Ianca to Chaves | 1,754.97 mi (2,824.35 km) |
| Ianca to Cinfaes | 1,802.47 mi (2,900.79 km) |
| Ianca to Coimbra | 1,839.66 mi (2,960.65 km) |
| Ianca to Condeixa-a-Nova | 1,845.63 mi (2,970.25 km) |
| Ianca to Corroios | 1,919.80 mi (3,089.62 km) |
| Ianca to Coruche | 1,879.33 mi (3,024.49 km) |
| Ianca to Costa de Caparica | 1,923.05 mi (3,094.84 km) |
| Ianca to Covilha | 1,792.48 mi (2,884.72 km) |
| Ianca to Eiras | 1,838.58 mi (2,958.91 km) |
| Ianca to Elvas | 1,814.86 mi (2,920.74 km) |
