| Grayslake to Reidsville (North Carolina) | 609.07 mi (980.21 km) |
| Grayslake to Reisterstown (Maryland) | 618.38 mi (995.19 km) |
| Grayslake to Rendon (Texas) | 841.22 mi (1,353.81 km) |
| Grayslake to Reno (Nevada) | 1,661.74 mi (2,674.31 km) |
| Grayslake to Renton (Washington) | 1,694.30 mi (2,726.72 km) |
| Grayslake to Republic (Missouri) | 459.66 mi (739.75 km) |
| Grayslake to Reston (Virginia) | 606.75 mi (976.47 km) |
| Grayslake to Revere (Massachusetts) | 867.74 mi (1,396.49 km) |
| Grayslake to Rexburg (Idaho) | 1,199.16 mi (1,929.86 km) |
| Grayslake to Reynoldsburg (Ohio) | 318.32 mi (512.29 km) |
| Grayslake to Rialto (California) | 1,681.47 mi (2,706.06 km) |
| Grayslake to Richardson (Texas) | 801.67 mi (1,290.16 km) |
| Grayslake to Richfield (Minnesota) | 315.58 mi (507.88 km) |
| Grayslake to Richfield (Wisconsin) | 62.84 mi (101.14 km) |
| Grayslake to Richland (Washington) | 1,558.81 mi (2,508.67 km) |
