| Harker Heights to McKeesport (Pennsylvania) | 1,183.55 mi (1,904.73 km) |
| Harker Heights to McKinleyville (California) | 1,619.81 mi (2,606.83 km) |
| Harker Heights to McKinney (Texas) | 158.82 mi (255.59 km) |
| Harker Heights to McLean (Virginia) | 1,275.39 mi (2,052.55 km) |
| Harker Heights to McMinnville (Oregon) | 1,686.32 mi (2,713.86 km) |
| Harker Heights to McMinnville (Tennessee) | 754.84 mi (1,214.80 km) |
| Harker Heights to McNair (Virginia) | 1,264.55 mi (2,035.09 km) |
| Harker Heights to McPherson (Kansas) | 505.36 mi (813.30 km) |
| Harker Heights to Mead Valley (California) | 1,159.31 mi (1,865.73 km) |
| Harker Heights to Meadow Woods (Florida) | 994.51 mi (1,600.51 km) |
| Harker Heights to Meadowbrook (Virginia) | 1,230.24 mi (1,979.88 km) |
| Harker Heights to Meadville (Pennsylvania) | 1,214.00 mi (1,953.75 km) |
| Harker Heights to Mebane (North Carolina) | 1,111.11 mi (1,788.16 km) |
| Harker Heights to Mechanicsville (Virginia) | 1,240.03 mi (1,995.64 km) |
| Harker Heights to Medford (Massachusetts) | 1,656.04 mi (2,665.14 km) |
