| Grayslake to Ridgeland (Mississippi) | 694.89 mi (1,118.31 km) |
| Grayslake to Ridgewood (New Jersey) | 723.86 mi (1,164.94 km) |
| Grayslake to Rifle (Colorado) | 1,045.83 mi (1,683.11 km) |
| Grayslake to Rincon (Georgia) | 787.58 mi (1,267.49 km) |
| Grayslake to Ringwood (New Jersey) | 713.84 mi (1,148.81 km) |
| Grayslake to Río Grande (Puerto Rico) | 2,105.68 mi (3,388.76 km) |
| Grayslake to Rio Grande City (Texas) | 1,260.27 mi (2,028.21 km) |
| Grayslake to Rio Linda (California) | 1,761.39 mi (2,834.69 km) |
| Grayslake to Rio Rancho (New Mexico) | 1,113.50 mi (1,792.01 km) |
| Grayslake to Rio Rico (Arizona) | 1,465.78 mi (2,358.95 km) |
| Grayslake to Ripon (California) | 1,767.79 mi (2,844.98 km) |
| Grayslake to River Edge (New Jersey) | 728.44 mi (1,172.31 km) |
| Grayslake to River Falls (Wisconsin) | 288.18 mi (463.77 km) |
| Grayslake to River Forest (Illinois) | 32.68 mi (52.60 km) |
| Grayslake to River Grove (Illinois) | 30.46 mi (49.02 km) |
