| Delaware to McKeesport (Pennsylvania) | 170.21 mi (273.93 km) |
| Delaware to McKinleyville (California) | 2,131.41 mi (3,430.17 km) |
| Delaware to McKinney (Texas) | 896.12 mi (1,442.17 km) |
| Delaware to McLean (Virginia) | 326.32 mi (525.17 km) |
| Delaware to McMinnville (Oregon) | 2,042.20 mi (3,286.60 km) |
| Delaware to McMinnville (Tennessee) | 350.22 mi (563.63 km) |
| Delaware to McNair (Virginia) | 315.09 mi (507.09 km) |
| Delaware to McPherson (Kansas) | 789.77 mi (1,271.01 km) |
| Delaware to Mead Valley (California) | 1,925.50 mi (3,098.79 km) |
| Delaware to Meadow Woods (Florida) | 829.10 mi (1,334.30 km) |
| Delaware to Meadowbrook (Virginia) | 360.02 mi (579.39 km) |
| Delaware to Meadville (Pennsylvania) | 179.39 mi (288.70 km) |
| Delaware to Mebane (North Carolina) | 356.02 mi (572.95 km) |
| Delaware to Mechanicsville (Virginia) | 357.84 mi (575.90 km) |
| Delaware to Medford (Massachusetts) | 637.32 mi (1,025.67 km) |
