| Grayslake to Robertsville (New Jersey) | 725.20 mi (1,167.09 km) |
| Grayslake to Robinson (Texas) | 903.34 mi (1,453.79 km) |
| Grayslake to Robstown (Texas) | 1,141.43 mi (1,836.96 km) |
| Grayslake to Rochester (Michigan) | 251.37 mi (404.55 km) |
| Grayslake to Rochester (Minnesota) | 252.01 mi (405.57 km) |
| Grayslake to Rochester (New Hampshire) | 865.37 mi (1,392.67 km) |
| Grayslake to Rochester (New York) | 531.25 mi (854.97 km) |
| Grayslake to Rochester Hills (Michigan) | 249.43 mi (401.41 km) |
| Grayslake to Rock Hill (South Carolina) | 635.45 mi (1,022.66 km) |
| Grayslake to Rock Island (Illinois) | 144.21 mi (232.08 km) |
| Grayslake to Rock Springs (Wyoming) | 1,086.84 mi (1,749.10 km) |
| Grayslake to Rockford (Illinois) | 52.94 mi (85.20 km) |
| Grayslake to Rockledge (Florida) | 1,051.38 mi (1,692.04 km) |
| Grayslake to Rocklin (California) | 1,748.88 mi (2,814.55 km) |
| Grayslake to Rockport (Texas) | 1,111.18 mi (1,788.27 km) |
