| Frederick to McKeesport (Pennsylvania) | 143.28 mi (230.59 km) |
| Frederick to McKinleyville (California) | 2,435.96 mi (3,920.30 km) |
| Frederick to McKinney (Texas) | 1,152.16 mi (1,854.22 km) |
| Frederick to McLean (Virginia) | 35.85 mi (57.70 km) |
| Frederick to McMinnville (Oregon) | 2,340.28 mi (3,766.31 km) |
| Frederick to McMinnville (Tennessee) | 526.03 mi (846.56 km) |
| Frederick to McNair (Virginia) | 33.33 mi (53.64 km) |
| Frederick to McPherson (Kansas) | 1,088.82 mi (1,752.29 km) |
| Frederick to Mead Valley (California) | 2,225.83 mi (3,582.13 km) |
| Frederick to Meadow Woods (Florida) | 796.78 mi (1,282.29 km) |
| Frederick to Meadowbrook (Virginia) | 138.47 mi (222.85 km) |
| Frederick to Meadville (Pennsylvania) | 209.71 mi (337.49 km) |
| Frederick to Mebane (North Carolina) | 252.66 mi (406.61 km) |
| Frederick to Mechanicsville (Virginia) | 124.92 mi (201.04 km) |
| Frederick to Medford (Massachusetts) | 388.44 mi (625.13 km) |
