| Idrija to Cascais | 1,292.95 mi (2,080.81 km) |
| Idrija to Castelo Branco | 1,165.70 mi (1,876.01 km) |
| Idrija to Castro Daire | 1,152.23 mi (1,854.34 km) |
| Idrija to Celorico de Basto | 1,141.60 mi (1,837.23 km) |
| Idrija to Chamusca | 1,227.12 mi (1,974.87 km) |
| Idrija to Chaves | 1,106.76 mi (1,781.16 km) |
| Idrija to Cinfaes | 1,155.90 mi (1,860.24 km) |
| Idrija to Coimbra | 1,196.53 mi (1,925.62 km) |
| Idrija to Condeixa-a-Nova | 1,202.82 mi (1,935.76 km) |
| Idrija to Corroios | 1,283.63 mi (2,065.80 km) |
| Idrija to Coruche | 1,242.67 mi (1,999.88 km) |
| Idrija to Costa de Caparica | 1,286.50 mi (2,070.42 km) |
| Idrija to Covilha | 1,150.62 mi (1,851.75 km) |
| Idrija to Eiras | 1,195.31 mi (1,923.67 km) |
| Idrija to Elvas | 1,182.36 mi (1,902.82 km) |
