| Idrija to Collegno | 318.76 mi (513.00 km) |
| Idrija to Cologno al Serio | 210.46 mi (338.69 km) |
| Idrija to Cologno Monzese | 231.20 mi (372.08 km) |
| Idrija to Colorno | 191.39 mi (308.01 km) |
| Idrija to Comacchio | 126.95 mi (204.30 km) |
| Idrija to Comiso | 626.16 mi (1,007.71 km) |
| Idrija to Como | 237.90 mi (382.87 km) |
| Idrija to Concordia Sagittaria | 58.93 mi (94.84 km) |
| Idrija to Concorezzo | 227.77 mi (366.55 km) |
| Idrija to Conegliano | 83.50 mi (134.39 km) |
| Idrija to Conselice | 148.07 mi (238.29 km) |
| Idrija to Conselve | 117.16 mi (188.56 km) |
| Idrija to Conversano | 380.77 mi (612.79 km) |
| Idrija to Copertino | 445.04 mi (716.22 km) |
| Idrija to Copparo | 130.81 mi (210.52 km) |
