| River Grove to Robertsville (New Jersey) | 712.52 mi (1,146.69 km) |
| River Grove to Robinson (Texas) | 886.60 mi (1,426.85 km) |
| River Grove to Robstown (Texas) | 1,122.38 mi (1,806.29 km) |
| River Grove to Rochester (Michigan) | 246.74 mi (397.09 km) |
| River Grove to Rochester (Minnesota) | 275.44 mi (443.29 km) |
| River Grove to Rochester (New Hampshire) | 861.05 mi (1,385.72 km) |
| River Grove to Rochester (New York) | 527.02 mi (848.16 km) |
| River Grove to Rochester Hills (Michigan) | 244.64 mi (393.71 km) |
| River Grove to Rock Hill (South Carolina) | 606.82 mi (976.58 km) |
| River Grove to Rock Island (Illinois) | 145.04 mi (233.41 km) |
| River Grove to Rock Springs (Wyoming) | 1,099.45 mi (1,769.40 km) |
| River Grove to Rockford (Illinois) | 67.00 mi (107.82 km) |
| River Grove to Rockledge (Florida) | 1,021.09 mi (1,643.29 km) |
| River Grove to Rocklin (California) | 1,760.77 mi (2,833.68 km) |
| River Grove to Rockport (Texas) | 1,091.58 mi (1,756.72 km) |
