| Frederick to Mauldin (South Carolina) | 419.22 mi (674.67 km) |
| Frederick to Maumee (Ohio) | 359.86 mi (579.13 km) |
| Frederick to Maumelle (Arkansas) | 882.63 mi (1,420.45 km) |
| Frederick to Mayagüez (Puerto Rico) | 1,590.74 mi (2,560.05 km) |
| Frederick to Mayfield Heights (Ohio) | 256.46 mi (412.74 km) |
| Frederick to Mays Chapel (Maryland) | 40.69 mi (65.48 km) |
| Frederick to Maywood (California) | 2,269.96 mi (3,653.15 km) |
| Frederick to Maywood (Illinois) | 571.80 mi (920.22 km) |
| Frederick to McAlester (Oklahoma) | 1,055.38 mi (1,698.47 km) |
| Frederick to McAllen (Texas) | 1,508.76 mi (2,428.12 km) |
| Frederick to McCalla (Alabama) | 681.72 mi (1,097.12 km) |
| Frederick to McComb (Mississippi) | 926.66 mi (1,491.31 km) |
| Frederick to McDonough (Georgia) | 557.98 mi (897.98 km) |
| Frederick to McFarland (California) | 2,285.19 mi (3,677.65 km) |
| Frederick to McHenry (Illinois) | 602.15 mi (969.06 km) |
