| Galveston to McKeesport (Pennsylvania) | 1,144.32 mi (1,841.60 km) |
| Galveston to McKinleyville (California) | 1,825.88 mi (2,938.46 km) |
| Galveston to McKinney (Texas) | 292.58 mi (470.86 km) |
| Galveston to McLean (Virginia) | 1,210.62 mi (1,948.30 km) |
| Galveston to McMinnville (Oregon) | 1,891.82 mi (3,044.59 km) |
| Galveston to McMinnville (Tennessee) | 692.15 mi (1,113.90 km) |
| Galveston to McNair (Virginia) | 1,200.61 mi (1,932.19 km) |
| Galveston to McPherson (Kansas) | 649.98 mi (1,046.04 km) |
| Galveston to Mead Valley (California) | 1,353.21 mi (2,177.79 km) |
| Galveston to Meadow Woods (Florida) | 821.80 mi (1,322.55 km) |
| Galveston to Meadowbrook (Virginia) | 1,150.66 mi (1,851.81 km) |
| Galveston to Meadville (Pennsylvania) | 1,189.38 mi (1,914.11 km) |
| Galveston to Mebane (North Carolina) | 1,022.07 mi (1,644.87 km) |
| Galveston to Mechanicsville (Virginia) | 1,162.16 mi (1,870.32 km) |
| Galveston to Medford (Massachusetts) | 1,604.47 mi (2,582.14 km) |
