| Owings Mills to Mattoon (Illinois) | 616.98 mi (992.94 km) |
| Owings Mills to Mauldin (South Carolina) | 440.93 mi (709.61 km) |
| Owings Mills to Maumee (Ohio) | 390.54 mi (628.52 km) |
| Owings Mills to Maumelle (Arkansas) | 914.20 mi (1,471.26 km) |
| Owings Mills to Mayagüez (Puerto Rico) | 1,575.32 mi (2,535.23 km) |
| Owings Mills to Mayfield Heights (Ohio) | 284.95 mi (458.58 km) |
| Owings Mills to Mays Chapel (Maryland) | 7.62 mi (12.26 km) |
| Owings Mills to Maywood (California) | 2,303.23 mi (3,706.70 km) |
| Owings Mills to Maywood (Illinois) | 603.52 mi (971.27 km) |
| Owings Mills to McAlester (Oklahoma) | 1,087.72 mi (1,750.51 km) |
| Owings Mills to McAllen (Texas) | 1,536.65 mi (2,473.00 km) |
| Owings Mills to McCalla (Alabama) | 708.27 mi (1,139.86 km) |
| Owings Mills to McComb (Mississippi) | 953.76 mi (1,534.93 km) |
| Owings Mills to McDonough (Georgia) | 580.65 mi (934.47 km) |
| Owings Mills to McFarland (California) | 2,318.36 mi (3,731.04 km) |
