| Idrija to Chantilly (Virginia) | 4,424.87 mi (7,121.15 km) |
| Idrija to Chaparral (New Mexico) | 5,887.72 mi (9,475.38 km) |
| Idrija to Chapel Hill (North Carolina) | 4,623.78 mi (7,441.25 km) |
| Idrija to Charleston (Illinois) | 4,827.86 mi (7,769.69 km) |
| Idrija to Charleston (South Carolina) | 4,806.31 mi (7,735.01 km) |
| Idrija to Charleston (West Virginia) | 4,621.20 mi (7,437.10 km) |
| Idrija to Charlotte (North Carolina) | 4,732.08 mi (7,615.55 km) |
| Idrija to Charlottesville (Virginia) | 4,505.67 mi (7,251.18 km) |
| Idrija to Chaska (Minnesota) | 4,770.07 mi (7,676.69 km) |
| Idrija to Chatham (Illinois) | 4,876.83 mi (7,848.50 km) |
| Idrija to Chattanooga (Tennessee) | 4,922.01 mi (7,921.21 km) |
| Idrija to Cheat Lake (West Virginia) | 4,489.51 mi (7,225.17 km) |
| Idrija to Chelsea (Alabama) | 5,062.36 mi (8,147.08 km) |
| Idrija to Chelsea (Massachusetts) | 4,010.72 mi (6,454.64 km) |
| Idrija to Cheney (Washington) | 5,345.87 mi (8,603.35 km) |
