| River Grove to Montgomeryville (Pennsylvania) | 665.51 mi (1,071.03 km) |
| River Grove to Monticello (Minnesota) | 378.40 mi (608.97 km) |
| River Grove to Montrose (Colorado) | 1,080.58 mi (1,739.02 km) |
| River Grove to Moody (Alabama) | 579.88 mi (933.22 km) |
| River Grove to Moore (Oklahoma) | 690.76 mi (1,111.67 km) |
| River Grove to Moorestown-Lenola (New Jersey) | 684.65 mi (1,101.83 km) |
| River Grove to Mooresville (North Carolina) | 578.00 mi (930.20 km) |
| River Grove to Moorhead (Minnesota) | 556.24 mi (895.18 km) |
| River Grove to Moorpark (California) | 1,757.08 mi (2,827.74 km) |
| River Grove to Moraga (California) | 1,827.03 mi (2,940.32 km) |
| River Grove to Moreno Valley (California) | 1,683.46 mi (2,709.27 km) |
| River Grove to Morgan City (Louisiana) | 864.79 mi (1,391.75 km) |
| River Grove to Morgan Hill (California) | 1,819.47 mi (2,928.16 km) |
| River Grove to Morganton (North Carolina) | 539.73 mi (868.61 km) |
| River Grove to Morgantown (West Virginia) | 441.84 mi (711.07 km) |
