| Idrija to Romeoville (Illinois) | 4,722.95 mi (7,600.86 km) |
| Idrija to Romulus (Michigan) | 4,514.51 mi (7,265.41 km) |
| Idrija to Ronkonkoma (New York) | 4,162.90 mi (6,699.54 km) |
| Idrija to Roosevelt (New York) | 4,187.24 mi (6,738.71 km) |
| Idrija to Rosamond (California) | 6,107.23 mi (9,828.64 km) |
| Idrija to Rosaryville (Maryland) | 4,404.36 mi (7,088.13 km) |
| Idrija to Roscoe (Illinois) | 4,719.46 mi (7,595.24 km) |
| Idrija to Rose Hill (Virginia) | 4,415.23 mi (7,105.63 km) |
| Idrija to Roseburg (Oregon) | 5,741.45 mi (9,239.98 km) |
| Idrija to Rosedale (California) | 6,104.73 mi (9,824.61 km) |
| Idrija to Rosedale (Maryland) | 4,366.74 mi (7,027.59 km) |
| Idrija to Roselle (Illinois) | 4,705.99 mi (7,573.56 km) |
| Idrija to Roselle (New Jersey) | 4,216.55 mi (6,785.88 km) |
| Idrija to Roselle Park (New Jersey) | 4,216.30 mi (6,785.47 km) |
| Idrija to Rosemead (California) | 6,150.52 mi (9,898.31 km) |
