| Round Lake Beach to Marrero (Louisiana) | 870.45 mi (1,400.85 km) |
| Round Lake Beach to Marshall (Minnesota) | 412.27 mi (663.49 km) |
| Round Lake Beach to Marshall (Missouri) | 350.16 mi (563.53 km) |
| Round Lake Beach to Marshall (Texas) | 761.48 mi (1,225.49 km) |
| Round Lake Beach to Marshalltown (Iowa) | 248.09 mi (399.26 km) |
| Round Lake Beach to Marshfield (Wisconsin) | 189.40 mi (304.81 km) |
| Round Lake Beach to Martha Lake (Washington) | 1,692.80 mi (2,724.30 km) |
| Round Lake Beach to Martin (Tennessee) | 419.38 mi (674.93 km) |
| Round Lake Beach to Martinez (California) | 1,809.34 mi (2,911.84 km) |
| Round Lake Beach to Martinez (Georgia) | 692.97 mi (1,115.23 km) |
| Round Lake Beach to Martinsburg (West Virginia) | 564.34 mi (908.22 km) |
| Round Lake Beach to Martinsville (Indiana) | 222.17 mi (357.56 km) |
| Round Lake Beach to Martinsville (New Jersey) | 708.90 mi (1,140.86 km) |
| Round Lake Beach to Martinsville (Virginia) | 588.27 mi (946.74 km) |
| Round Lake Beach to Maryland City (Maryland) | 631.63 mi (1,016.50 km) |
