| Idrija to Hormigueros (Puerto Rico) | 4,905.51 mi (7,894.65 km) |
| Idrija to Horn Lake (Mississippi) | 5,121.18 mi (8,241.75 km) |
| Idrija to Hot Springs (Arkansas) | 5,262.15 mi (8,468.62 km) |
| Idrija to Hot Springs Village (Arkansas) | 5,250.38 mi (8,449.67 km) |
| Idrija to Houma (Louisiana) | 5,415.31 mi (8,715.10 km) |
| Idrija to Houston (Texas) | 5,594.49 mi (9,003.46 km) |
| Idrija to Howard (Wisconsin) | 4,585.23 mi (7,379.22 km) |
| Idrija to Huber Heights (Ohio) | 4,651.52 mi (7,485.90 km) |
| Idrija to Hudson (Florida) | 5,135.25 mi (8,264.39 km) |
| Idrija to Hudson (Ohio) | 4,483.09 mi (7,214.84 km) |
| Idrija to Hudson (Wisconsin) | 4,732.32 mi (7,615.93 km) |
| Idrija to Hueytown (Alabama) | 5,073.73 mi (8,165.37 km) |
| Idrija to Hugo (Minnesota) | 4,730.43 mi (7,612.90 km) |
| Idrija to Humacao (Puerto Rico) | 4,843.12 mi (7,794.25 km) |
| Idrija to Humble (Texas) | 5,578.95 mi (8,978.45 km) |
