| Gary to Mountain Brook (Alabama) | 560.87 mi (902.64 km) |
| Gary to Mountain Home (Arkansas) | 452.66 mi (728.48 km) |
| Gary to Mountain Home (Idaho) | 1,444.35 mi (2,324.46 km) |
| Gary to Mountain House (California) | 1,825.47 mi (2,937.80 km) |
| Gary to Mountain Park (Georgia) | 563.11 mi (906.25 km) |
| Gary to Mountain Top (Pennsylvania) | 593.79 mi (955.61 km) |
| Gary to Mountain View (California) | 1,861.53 mi (2,995.85 km) |
| Gary to Mountlake Terrace (Washington) | 1,753.65 mi (2,822.23 km) |
| Gary to Mukilteo (Washington) | 1,753.63 mi (2,822.19 km) |
| Gary to Muncie (Indiana) | 140.14 mi (225.54 km) |
| Gary to Mundelein (Illinois) | 57.97 mi (93.30 km) |
| Gary to Munhall (Pennsylvania) | 396.93 mi (638.80 km) |
| Gary to Munster (Indiana) | 8.64 mi (13.91 km) |
| Gary to Murfreesboro (Tennessee) | 399.88 mi (643.55 km) |
| Gary to Murphy (Texas) | 780.01 mi (1,255.30 km) |
