| River Grove to Maryland Heights (Missouri) | 261.40 mi (420.68 km) |
| River Grove to Marysville (California) | 1,770.77 mi (2,849.78 km) |
| River Grove to Marysville (Ohio) | 261.00 mi (420.04 km) |
| River Grove to Marysville (Washington) | 1,714.23 mi (2,758.78 km) |
| River Grove to Maryville (Missouri) | 381.79 mi (614.43 km) |
| River Grove to Maryville (Tennessee) | 474.54 mi (763.69 km) |
| River Grove to Mason (Ohio) | 256.52 mi (412.82 km) |
| River Grove to Mason City (Iowa) | 285.72 mi (459.83 km) |
| River Grove to Massapequa (New York) | 749.95 mi (1,206.94 km) |
| River Grove to Massapequa Park (New York) | 750.84 mi (1,208.36 km) |
| River Grove to Massillon (Ohio) | 336.66 mi (541.79 km) |
| River Grove to Mastic (New York) | 780.09 mi (1,255.43 km) |
| River Grove to Mastic Beach (New York) | 781.21 mi (1,257.24 km) |
| River Grove to Matteson (Illinois) | 29.04 mi (46.74 km) |
| River Grove to Matthews (North Carolina) | 607.40 mi (977.52 km) |
