| Idrija to Red Bank (New Jersey) | 4,221.33 mi (6,793.58 km) |
| Idrija to Red Bank (Tennessee) | 4,921.80 mi (7,920.87 km) |
| Idrija to Red Bluff (California) | 5,899.19 mi (9,493.83 km) |
| Idrija to Red Hill (South Carolina) | 4,720.79 mi (7,597.38 km) |
| Idrija to Red Oak (Texas) | 5,507.47 mi (8,863.42 km) |
| Idrija to Red Wing (Minnesota) | 4,746.32 mi (7,638.46 km) |
| Idrija to Redan (Georgia) | 4,940.43 mi (7,950.85 km) |
| Idrija to Redding (California) | 5,878.32 mi (9,460.25 km) |
| Idrija to Redland (Maryland) | 4,401.64 mi (7,083.76 km) |
| Idrija to Redlands (California) | 6,124.50 mi (9,856.43 km) |
| Idrija to Redmond (Oregon) | 5,626.22 mi (9,054.53 km) |
| Idrija to Redmond (Washington) | 5,443.03 mi (8,759.71 km) |
| Idrija to Redondo Beach (California) | 6,171.71 mi (9,932.41 km) |
| Idrija to Redwood City (California) | 6,060.56 mi (9,753.52 km) |
| Idrija to Reedley (California) | 6,039.40 mi (9,719.47 km) |
