| Havre de Grace to McKeesport (Pennsylvania) | 205.00 mi (329.92 km) |
| Havre de Grace to McKinleyville (California) | 2,499.43 mi (4,022.45 km) |
| Havre de Grace to McKinney (Texas) | 1,221.08 mi (1,965.14 km) |
| Havre de Grace to McLean (Virginia) | 71.28 mi (114.72 km) |
| Havre de Grace to McMinnville (Oregon) | 2,399.69 mi (3,861.92 km) |
| Havre de Grace to McMinnville (Tennessee) | 592.06 mi (952.83 km) |
| Havre de Grace to McNair (Virginia) | 80.71 mi (129.90 km) |
| Havre de Grace to McPherson (Kansas) | 1,157.66 mi (1,863.07 km) |
| Havre de Grace to Mead Valley (California) | 2,294.62 mi (3,692.83 km) |
| Havre de Grace to Meadow Woods (Florida) | 828.08 mi (1,332.67 km) |
| Havre de Grace to Meadowbrook (Virginia) | 163.76 mi (263.54 km) |
| Havre de Grace to Meadville (Pennsylvania) | 256.46 mi (412.73 km) |
| Havre de Grace to Mebane (North Carolina) | 294.87 mi (474.54 km) |
| Havre de Grace to Mechanicsville (Virginia) | 148.74 mi (239.38 km) |
| Havre de Grace to Medford (Massachusetts) | 327.98 mi (527.84 km) |
