| Idrija to Coldwater (Michigan) | 4,590.18 mi (7,387.18 km) |
| Idrija to Colesville (Maryland) | 4,398.26 mi (7,078.32 km) |
| Idrija to College (Alaska) | 4,713.91 mi (7,586.30 km) |
| Idrija to College Park (Georgia) | 4,957.81 mi (7,978.83 km) |
| Idrija to College Park (Maryland) | 4,398.82 mi (7,079.22 km) |
| Idrija to College Station (Texas) | 5,588.93 mi (8,994.51 km) |
| Idrija to Collegedale (Tennessee) | 4,914.48 mi (7,909.09 km) |
| Idrija to Colleyville (Texas) | 5,502.12 mi (8,854.80 km) |
| Idrija to Collierville (Tennessee) | 5,102.51 mi (8,211.70 km) |
| Idrija to Collinsville (Illinois) | 4,937.04 mi (7,945.39 km) |
| Idrija to Colonia (New Jersey) | 4,221.36 mi (6,793.62 km) |
| Idrija to Colonial Heights (Virginia) | 4,494.47 mi (7,233.15 km) |
| Idrija to Colonial Park (Pennsylvania) | 4,337.03 mi (6,979.78 km) |
| Idrija to Colorado Springs (Colorado) | 5,457.73 mi (8,783.36 km) |
| Idrija to Colton (California) | 6,128.96 mi (9,863.60 km) |
