| Southlake to Maryland Heights (Missouri) | 545.97 mi (878.65 km) |
| Southlake to Marysville (California) | 1,425.32 mi (2,293.83 km) |
| Southlake to Marysville (Ohio) | 913.65 mi (1,470.38 km) |
| Southlake to Marysville (Washington) | 1,665.42 mi (2,680.24 km) |
| Southlake to Maryville (Missouri) | 525.84 mi (846.26 km) |
| Southlake to Maryville (Tennessee) | 775.03 mi (1,247.29 km) |
| Southlake to Mason (Ohio) | 841.00 mi (1,353.46 km) |
| Southlake to Mason City (Iowa) | 736.18 mi (1,184.76 km) |
| Southlake to Massapequa (New York) | 1,408.55 mi (2,266.85 km) |
| Southlake to Massapequa Park (New York) | 1,409.86 mi (2,268.96 km) |
| Southlake to Massillon (Ohio) | 1,016.74 mi (1,636.28 km) |
| Southlake to Mastic (New York) | 1,442.57 mi (2,321.59 km) |
| Southlake to Mastic Beach (New York) | 1,442.39 mi (2,321.31 km) |
| Southlake to Matteson (Illinois) | 784.48 mi (1,262.50 km) |
| Southlake to Matthews (North Carolina) | 951.98 mi (1,532.06 km) |
