| Idrija to University Place (Washington) | 5,480.66 mi (8,820.26 km) |
| Idrija to Upland (California) | 6,135.15 mi (9,873.57 km) |
| Idrija to Upper Arlington (Ohio) | 4,602.51 mi (7,407.03 km) |
| Idrija to Upper Grand Lagoon (Florida) | 5,178.66 mi (8,334.25 km) |
| Idrija to Upper Montclair (New Jersey) | 4,206.08 mi (6,769.03 km) |
| Idrija to Urbana (Illinois) | 4,798.74 mi (7,722.83 km) |
| Idrija to Urbana (Maryland) | 4,401.31 mi (7,083.22 km) |
| Idrija to Urbana (Ohio) | 4,625.89 mi (7,444.65 km) |
| Idrija to Urbandale (Iowa) | 4,932.24 mi (7,937.67 km) |
| Idrija to Utica (New York) | 4,154.28 mi (6,685.67 km) |
| Idrija to Uvalde (Texas) | 5,796.36 mi (9,328.34 km) |
| Idrija to Vacaville (California) | 6,001.95 mi (9,659.20 km) |
| Idrija to Vadnais Heights (Minnesota) | 4,739.80 mi (7,627.97 km) |
| Idrija to Vail (Arizona) | 6,036.27 mi (9,714.44 km) |
| Idrija to Valdosta (Georgia) | 5,041.00 mi (8,112.71 km) |
