| Idrija to Centralia (Illinois) | 4,910.53 mi (7,902.74 km) |
| Idrija to Centralia (Washington) | 5,520.09 mi (8,883.73 km) |
| Idrija to Centreville (Virginia) | 4,426.71 mi (7,124.10 km) |
| Idrija to Ceres (California) | 6,021.31 mi (9,690.36 km) |
| Idrija to Cerritos (California) | 6,162.03 mi (9,916.82 km) |
| Idrija to Chalco (Nebraska) | 5,039.27 mi (8,109.93 km) |
| Idrija to Chalmette (Louisiana) | 5,366.54 mi (8,636.61 km) |
| Idrija to Chambersburg (Pennsylvania) | 4,387.86 mi (7,061.59 km) |
| Idrija to Chamblee (Georgia) | 4,939.21 mi (7,948.88 km) |
| Idrija to Champaign (Illinois) | 4,801.50 mi (7,727.27 km) |
| Idrija to Champlin (Minnesota) | 4,745.27 mi (7,636.77 km) |
| Idrija to Chandler (Arizona) | 6,002.78 mi (9,660.54 km) |
| Idrija to Chanhassen (Minnesota) | 4,766.58 mi (7,671.06 km) |
| Idrija to Channahon (Illinois) | 4,738.96 mi (7,626.62 km) |
| Idrija to Channelview (Texas) | 5,583.29 mi (8,985.44 km) |
