| Idrija to Columbia (Illinois) | 4,955.72 mi (7,975.46 km) |
| Idrija to Columbia (Maryland) | 4,386.80 mi (7,059.88 km) |
| Idrija to Columbia (Missouri) | 5,011.85 mi (8,065.79 km) |
| Idrija to Columbia (Pennsylvania) | 4,335.53 mi (6,977.36 km) |
| Idrija to Columbia (South Carolina) | 4,789.41 mi (7,707.81 km) |
| Idrija to Columbia (Tennessee) | 4,968.40 mi (7,995.87 km) |
| Idrija to Columbia Heights (Minnesota) | 4,746.21 mi (7,638.29 km) |
| Idrija to Columbine (Colorado) | 5,428.90 mi (8,736.98 km) |
| Idrija to Columbus (Georgia) | 5,028.99 mi (8,093.37 km) |
| Idrija to Columbus (Indiana) | 4,752.90 mi (7,649.06 km) |
| Idrija to Columbus (Mississippi) | 5,126.22 mi (8,249.86 km) |
| Idrija to Columbus (Nebraska) | 5,069.35 mi (8,158.33 km) |
| Idrija to Columbus (Ohio) | 4,601.01 mi (7,404.61 km) |
| Idrija to Commack (New York) | 4,167.87 mi (6,707.54 km) |
| Idrija to Commerce (California) | 6,156.88 mi (9,908.54 km) |
