| Idrija to Hilliard (Ohio) | 4,605.62 mi (7,412.02 km) |
| Idrija to Hillsboro (Oregon) | 5,591.72 mi (8,999.01 km) |
| Idrija to Hillsborough (California) | 6,060.75 mi (9,753.83 km) |
| Idrija to Hillsborough (New Jersey) | 4,239.01 mi (6,822.03 km) |
| Idrija to Hilo (Hawaii) | 7,847.02 mi (12,628.56 km) |
| Idrija to Hilton Head Island (South Carolina) | 4,869.15 mi (7,836.14 km) |
| Idrija to Hinesville (Georgia) | 4,923.38 mi (7,923.41 km) |
| Idrija to Hinsdale (Illinois) | 4,708.49 mi (7,577.59 km) |
| Idrija to Hobart (Indiana) | 4,697.18 mi (7,559.38 km) |
| Idrija to Hobbs (New Mexico) | 5,734.47 mi (9,228.75 km) |
| Idrija to Hobe Sound (Florida) | 5,084.92 mi (8,183.38 km) |
| Idrija to Hoboken (New Jersey) | 4,203.02 mi (6,764.11 km) |
| Idrija to Hockessin (Delaware) | 4,312.61 mi (6,940.48 km) |
| Idrija to Hoffman Estates (Illinois) | 4,704.36 mi (7,570.93 km) |
| Idrija to Holbrook (New York) | 4,161.00 mi (6,696.49 km) |
