| Idstein to River Ridge (Louisiana) | 5,004.30 mi (8,053.65 km) |
| Idstein to Riverbank (California) | 5,621.25 mi (9,046.54 km) |
| Idstein to Riverdale (Georgia) | 4,589.67 mi (7,386.36 km) |
| Idstein to Riverdale (Illinois) | 4,319.71 mi (6,951.90 km) |
| Idstein to Riverside (California) | 5,744.08 mi (9,244.20 km) |
| Idstein to Riverside (Ohio) | 4,276.00 mi (6,881.56 km) |
| Idstein to Riverton (Utah) | 5,200.34 mi (8,369.14 km) |
| Idstein to Riverton (Wyoming) | 4,951.84 mi (7,969.21 km) |
| Idstein to Riverview (Florida) | 4,790.17 mi (7,709.04 km) |
| Idstein to Riverview (Michigan) | 4,128.22 mi (6,643.73 km) |
| Idstein to Riviera Beach (Florida) | 4,748.86 mi (7,642.55 km) |
| Idstein to Riviera Beach (Maryland) | 4,005.66 mi (6,446.48 km) |
| Idstein to Roanoke (Virginia) | 4,231.08 mi (6,809.26 km) |
| Idstein to Roanoke Rapids (North Carolina) | 4,176.93 mi (6,722.12 km) |
| Idstein to Robbinsdale (Minnesota) | 4,358.70 mi (7,014.65 km) |
