| Idrija to Castelfidardo | 176.96 mi (284.79 km) |
| Idrija to Castelfiorentino | 223.73 mi (360.06 km) |
| Idrija to Castelfranco di Sopra | 204.10 mi (328.46 km) |
| Idrija to Castelfranco di Sotto | 225.98 mi (363.67 km) |
| Idrija to Castelfranco Emilia | 174.15 mi (280.27 km) |
| Idrija to Castelfranco Veneto | 103.45 mi (166.48 km) |
| Idrija to Castellabate | 398.20 mi (640.83 km) |
| Idrija to Castellammare del Golfo | 554.21 mi (891.92 km) |
| Idrija to Castellammare di Stabia | 367.44 mi (591.33 km) |
| Idrija to Castellamonte | 307.71 mi (495.22 km) |
| Idrija to Castellana Grotte | 387.09 mi (622.97 km) |
| Idrija to Castellaneta | 398.62 mi (641.52 km) |
| Idrija to Castellanza | 248.34 mi (399.66 km) |
| Idrija to Castellarano | 186.29 mi (299.81 km) |
| Idrija to Castelleone | 211.75 mi (340.78 km) |
