| Southlake to McHenry (Illinois) | 808.43 mi (1,301.04 km) |
| Southlake to McKeesport (Pennsylvania) | 1,083.98 mi (1,744.49 km) |
| Southlake to McKinleyville (California) | 1,578.74 mi (2,540.73 km) |
| Southlake to McKinney (Texas) | 32.78 mi (52.75 km) |
| Southlake to McLean (Virginia) | 1,187.38 mi (1,910.90 km) |
| Southlake to McMinnville (Oregon) | 1,622.39 mi (2,610.98 km) |
| Southlake to McMinnville (Tennessee) | 675.20 mi (1,086.63 km) |
| Southlake to McNair (Virginia) | 1,176.21 mi (1,892.92 km) |
| Southlake to McPherson (Kansas) | 375.36 mi (604.09 km) |
| Southlake to Mead Valley (California) | 1,161.25 mi (1,868.85 km) |
| Southlake to Meadow Woods (Florida) | 990.01 mi (1,593.27 km) |
| Southlake to Meadowbrook (Virginia) | 1,150.81 mi (1,852.04 km) |
| Southlake to Meadville (Pennsylvania) | 1,107.77 mi (1,782.78 km) |
| Southlake to Mebane (North Carolina) | 1,038.81 mi (1,671.81 km) |
| Southlake to Mechanicsville (Virginia) | 1,159.51 mi (1,866.06 km) |
