| Owings Mills to McHenry (Illinois) | 633.42 mi (1,019.39 km) |
| Owings Mills to McKeesport (Pennsylvania) | 174.15 mi (280.27 km) |
| Owings Mills to McKinleyville (California) | 2,468.06 mi (3,971.95 km) |
| Owings Mills to McKinney (Texas) | 1,183.78 mi (1,905.11 km) |
| Owings Mills to McLean (Virginia) | 38.87 mi (62.56 km) |
| Owings Mills to McMinnville (Oregon) | 2,371.02 mi (3,815.80 km) |
| Owings Mills to McMinnville (Tennessee) | 555.28 mi (893.64 km) |
| Owings Mills to McNair (Virginia) | 45.98 mi (74.00 km) |
| Owings Mills to McPherson (Kansas) | 1,122.10 mi (1,805.84 km) |
| Owings Mills to Mead Valley (California) | 2,259.11 mi (3,635.69 km) |
| Owings Mills to Meadow Woods (Florida) | 806.09 mi (1,297.28 km) |
| Owings Mills to Meadowbrook (Virginia) | 141.80 mi (228.21 km) |
| Owings Mills to Meadville (Pennsylvania) | 234.32 mi (377.10 km) |
| Owings Mills to Mebane (North Carolina) | 266.82 mi (429.41 km) |
| Owings Mills to Mechanicsville (Virginia) | 127.07 mi (204.49 km) |
