| River Grove to Rockville (Maryland) | 594.06 mi (956.05 km) |
| River Grove to Rockville Centre (New York) | 741.38 mi (1,193.14 km) |
| River Grove to Rockwall (Texas) | 780.11 mi (1,255.47 km) |
| River Grove to Rocky Mount (North Carolina) | 677.49 mi (1,090.31 km) |
| River Grove to Rocky Point (New York) | 773.99 mi (1,245.61 km) |
| River Grove to Rocky River (Ohio) | 310.31 mi (499.40 km) |
| River Grove to Roessleville (New York) | 718.60 mi (1,156.48 km) |
| River Grove to Rogers (Arkansas) | 514.17 mi (827.48 km) |
| River Grove to Rogers (Minnesota) | 365.11 mi (587.59 km) |
| River Grove to Rohnert Park (California) | 1,844.98 mi (2,969.20 km) |
| River Grove to Rolla (Missouri) | 344.51 mi (554.44 km) |
| River Grove to Rolling Meadows (Illinois) | 14.16 mi (22.79 km) |
| River Grove to Roma (Texas) | 1,244.71 mi (2,003.17 km) |
| River Grove to Rome (Georgia) | 548.33 mi (882.46 km) |
| River Grove to Rome (New York) | 634.02 mi (1,020.35 km) |
