| Martinsburg to McKeesport (Pennsylvania) | 116.25 mi (187.08 km) |
| Martinsburg to McKinleyville (California) | 2,406.81 mi (3,873.39 km) |
| Martinsburg to McKinney (Texas) | 1,123.79 mi (1,808.56 km) |
| Martinsburg to McLean (Virginia) | 54.98 mi (88.49 km) |
| Martinsburg to McMinnville (Oregon) | 2,312.31 mi (3,721.31 km) |
| Martinsburg to McMinnville (Tennessee) | 500.25 mi (805.07 km) |
| Martinsburg to McNair (Virginia) | 46.32 mi (74.54 km) |
| Martinsburg to McPherson (Kansas) | 1,058.71 mi (1,703.83 km) |
| Martinsburg to Mead Valley (California) | 2,195.72 mi (3,533.67 km) |
| Martinsburg to Meadow Woods (Florida) | 789.94 mi (1,271.28 km) |
| Martinsburg to Meadowbrook (Virginia) | 142.75 mi (229.74 km) |
| Martinsburg to Meadville (Pennsylvania) | 189.33 mi (304.70 km) |
| Martinsburg to Mebane (North Carolina) | 243.55 mi (391.96 km) |
| Martinsburg to Mechanicsville (Virginia) | 130.95 mi (210.75 km) |
| Martinsburg to Medford (Massachusetts) | 412.72 mi (664.21 km) |
