| San Marcos to Mount Washington (Kentucky) | 1,799.67 mi (2,896.29 km) |
| San Marcos to Mountain Brook (Alabama) | 1,751.13 mi (2,818.17 km) |
| San Marcos to Mountain Home (Arkansas) | 1,420.86 mi (2,286.65 km) |
| San Marcos to Mountain Home (Idaho) | 695.37 mi (1,119.09 km) |
| San Marcos to Mountain House (California) | 403.56 mi (649.47 km) |
| San Marcos to Mountain Park (Georgia) | 1,896.40 mi (3,051.97 km) |
| San Marcos to Mountain Top (Pennsylvania) | 2,316.58 mi (3,728.18 km) |
| San Marcos to Mountain View (California) | 404.12 mi (650.37 km) |
| San Marcos to Mountlake Terrace (Washington) | 1,047.43 mi (1,685.67 km) |
| San Marcos to Mukilteo (Washington) | 1,055.15 mi (1,698.11 km) |
| San Marcos to Muncie (Indiana) | 1,816.83 mi (2,923.91 km) |
| San Marcos to Mundelein (Illinois) | 1,704.18 mi (2,742.62 km) |
| San Marcos to Munhall (Pennsylvania) | 2,106.61 mi (3,390.26 km) |
| San Marcos to Munster (Indiana) | 1,720.15 mi (2,768.31 km) |
| San Marcos to Murfreesboro (Tennessee) | 1,754.59 mi (2,823.75 km) |
