| Round Lake Beach to Morris (Illinois) | 71.67 mi (115.35 km) |
| Round Lake Beach to Morristown (New Jersey) | 710.67 mi (1,143.72 km) |
| Round Lake Beach to Morristown (Tennessee) | 497.17 mi (800.11 km) |
| Round Lake Beach to Morrisville (North Carolina) | 670.12 mi (1,078.46 km) |
| Round Lake Beach to Morro Bay (California) | 1,815.50 mi (2,921.76 km) |
| Round Lake Beach to Morton (Illinois) | 141.50 mi (227.73 km) |
| Round Lake Beach to Morton Grove (Illinois) | 27.66 mi (44.51 km) |
| Round Lake Beach to Moscow (Idaho) | 1,446.46 mi (2,327.86 km) |
| Round Lake Beach to Moses Lake (Washington) | 1,554.40 mi (2,501.56 km) |
| Round Lake Beach to Moss Bluff (Louisiana) | 881.25 mi (1,418.23 km) |
| Round Lake Beach to Moss Point (Mississippi) | 826.38 mi (1,329.93 km) |
| Round Lake Beach to Moultrie (Georgia) | 810.80 mi (1,304.85 km) |
| Round Lake Beach to Mounds View (Minnesota) | 317.71 mi (511.31 km) |
| Round Lake Beach to Mount Airy (North Carolina) | 568.07 mi (914.22 km) |
| Round Lake Beach to Mount Clemens (Michigan) | 265.28 mi (426.93 km) |
