| Idrija to Rockville (Maryland) | 4,404.22 mi (7,087.90 km) |
| Idrija to Rockville Centre (New York) | 4,190.16 mi (6,743.41 km) |
| Idrija to Rockwall (Texas) | 5,473.54 mi (8,808.81 km) |
| Idrija to Rocky Mount (North Carolina) | 4,569.64 mi (7,354.12 km) |
| Idrija to Rocky Point (New York) | 4,149.56 mi (6,678.07 km) |
| Idrija to Rocky River (Ohio) | 4,489.10 mi (7,224.51 km) |
| Idrija to Roessleville (New York) | 4,112.59 mi (6,618.57 km) |
| Idrija to Rogers (Arkansas) | 5,212.31 mi (8,388.40 km) |
| Idrija to Rogers (Minnesota) | 4,750.99 mi (7,645.97 km) |
| Idrija to Rohnert Park (California) | 6,021.57 mi (9,690.78 km) |
| Idrija to Rolla (Missouri) | 5,039.92 mi (8,110.96 km) |
| Idrija to Rolling Meadows (Illinois) | 4,699.29 mi (7,562.77 km) |
| Idrija to Roma (Texas) | 5,914.72 mi (9,518.82 km) |
| Idrija to Rome (Georgia) | 4,957.65 mi (7,978.56 km) |
| Idrija to Rome (New York) | 4,159.59 mi (6,694.22 km) |
