| Box Elder to McKeesport (Pennsylvania) | 1,212.76 mi (1,951.75 km) |
| Box Elder to McKinleyville (California) | 1,088.37 mi (1,751.57 km) |
| Box Elder to McKinney (Texas) | 828.83 mi (1,333.87 km) |
| Box Elder to McLean (Virginia) | 1,379.48 mi (2,220.06 km) |
| Box Elder to McMinnville (Oregon) | 988.63 mi (1,591.04 km) |
| Box Elder to McMinnville (Tennessee) | 1,082.84 mi (1,742.66 km) |
| Box Elder to McNair (Virginia) | 1,368.56 mi (2,202.48 km) |
| Box Elder to McPherson (Kansas) | 486.22 mi (782.49 km) |
| Box Elder to Mead Valley (California) | 1,039.54 mi (1,672.98 km) |
| Box Elder to Meadow Woods (Florida) | 1,618.54 mi (2,604.79 km) |
| Box Elder to Meadowbrook (Virginia) | 1,410.39 mi (2,269.80 km) |
| Box Elder to Meadville (Pennsylvania) | 1,169.73 mi (1,882.50 km) |
| Box Elder to Mebane (North Carolina) | 1,368.68 mi (2,202.68 km) |
| Box Elder to Mechanicsville (Virginia) | 1,410.01 mi (2,269.20 km) |
| Box Elder to Medford (Massachusetts) | 1,602.68 mi (2,579.27 km) |
