| Idrija to Cabestany | 593.23 mi (954.71 km) |
| Idrija to Cabries | 459.64 mi (739.72 km) |
| Idrija to Cachan | 579.25 mi (932.21 km) |
| Idrija to Caen | 704.60 mi (1,133.95 km) |
| Idrija to Cagnes-sur-Mer | 373.58 mi (601.22 km) |
| Idrija to Cahors | 621.19 mi (999.72 km) |
| Idrija to Calais | 652.67 mi (1,050.37 km) |
| Idrija to Caluire-et-Cuire | 441.41 mi (710.38 km) |
| Idrija to Cambrai | 574.74 mi (924.96 km) |
| Idrija to Canet-en-Roussillon | 589.53 mi (948.76 km) |
| Idrija to Cannes | 383.28 mi (616.83 km) |
| Idrija to Canteleu | 648.06 mi (1,042.95 km) |
| Idrija to Capbreton | 773.67 mi (1,245.11 km) |
| Idrija to Carcassonne | 605.29 mi (974.12 km) |
| Idrija to Carmaux | 594.52 mi (956.79 km) |
