| Grayslake to Red Bank (New Jersey) | 736.55 mi (1,185.36 km) |
| Grayslake to Red Bank (Tennessee) | 520.72 mi (838.02 km) |
| Grayslake to Red Bluff (California) | 1,771.09 mi (2,850.29 km) |
| Grayslake to Red Hill (South Carolina) | 767.79 mi (1,235.64 km) |
| Grayslake to Red Oak (Texas) | 830.17 mi (1,336.04 km) |
| Grayslake to Red Wing (Minnesota) | 276.52 mi (445.02 km) |
| Grayslake to Redan (Georgia) | 630.29 mi (1,014.35 km) |
| Grayslake to Redding (California) | 1,769.92 mi (2,848.41 km) |
| Grayslake to Redland (Maryland) | 610.97 mi (983.25 km) |
| Grayslake to Redlands (California) | 1,672.70 mi (2,691.94 km) |
| Grayslake to Redmond (Oregon) | 1,660.67 mi (2,672.60 km) |
| Grayslake to Redmond (Washington) | 1,690.73 mi (2,720.96 km) |
| Grayslake to Redondo Beach (California) | 1,739.73 mi (2,799.83 km) |
| Grayslake to Redwood City (California) | 1,829.61 mi (2,944.48 km) |
| Grayslake to Reedley (California) | 1,711.36 mi (2,754.16 km) |
