| Grayslake to Rockville (Maryland) | 612.00 mi (984.92 km) |
| Grayslake to Rockville Centre (New York) | 752.92 mi (1,211.70 km) |
| Grayslake to Rockwall (Texas) | 796.20 mi (1,281.36 km) |
| Grayslake to Rocky Mount (North Carolina) | 702.13 mi (1,129.98 km) |
| Grayslake to Rocky Point (New York) | 784.55 mi (1,262.61 km) |
| Grayslake to Rocky River (Ohio) | 323.42 mi (520.49 km) |
| Grayslake to Roessleville (New York) | 724.61 mi (1,166.15 km) |
| Grayslake to Rogers (Arkansas) | 528.99 mi (851.33 km) |
| Grayslake to Rogers (Minnesota) | 339.30 mi (546.05 km) |
| Grayslake to Rohnert Park (California) | 1,833.17 mi (2,950.20 km) |
| Grayslake to Rolla (Missouri) | 361.77 mi (582.21 km) |
| Grayslake to Rolling Meadows (Illinois) | 18.37 mi (29.56 km) |
| Grayslake to Roma (Texas) | 1,263.14 mi (2,032.83 km) |
| Grayslake to Rome (Georgia) | 578.75 mi (931.41 km) |
| Grayslake to Rome (New York) | 638.37 mi (1,027.36 km) |
