| Idrija to Reidsville (North Carolina) | 4,631.76 mi (7,454.10 km) |
| Idrija to Reisterstown (Maryland) | 4,373.86 mi (7,039.04 km) |
| Idrija to Rendon (Texas) | 5,521.67 mi (8,886.27 km) |
| Idrija to Reno (Nevada) | 5,874.23 mi (9,453.66 km) |
| Idrija to Renton (Washington) | 5,456.66 mi (8,781.65 km) |
| Idrija to Republic (Missouri) | 5,143.74 mi (8,278.05 km) |
| Idrija to Reston (Virginia) | 4,418.00 mi (7,110.08 km) |
| Idrija to Revere (Massachusetts) | 4,008.62 mi (6,451.25 km) |
| Idrija to Rexburg (Idaho) | 5,401.81 mi (8,693.37 km) |
| Idrija to Reynoldsburg (Ohio) | 4,594.65 mi (7,394.37 km) |
| Idrija to Rialto (California) | 6,127.10 mi (9,860.62 km) |
| Idrija to Richardson (Texas) | 5,481.14 mi (8,821.04 km) |
| Idrija to Richfield (Minnesota) | 4,755.81 mi (7,653.74 km) |
| Idrija to Richfield (Wisconsin) | 4,652.80 mi (7,487.96 km) |
| Idrija to Richland (Washington) | 5,459.36 mi (8,785.99 km) |
