| Delaware to Mitchell (South Dakota) | 802.74 mi (1,291.89 km) |
| Delaware to Mitchellville (Maryland) | 345.90 mi (556.67 km) |
| Delaware to Moberly (Missouri) | 499.97 mi (804.62 km) |
| Delaware to Mobile (Alabama) | 721.51 mi (1,161.16 km) |
| Delaware to Modesto (California) | 2,030.36 mi (3,267.55 km) |
| Delaware to Mokena (Illinois) | 265.20 mi (426.81 km) |
| Delaware to Moline (Illinois) | 396.08 mi (637.43 km) |
| Delaware to Moncks Corner (South Carolina) | 519.76 mi (836.47 km) |
| Delaware to Monfort Heights (Ohio) | 111.55 mi (179.52 km) |
| Delaware to Monmouth (Oregon) | 2,046.22 mi (3,293.07 km) |
| Delaware to Monroe (Georgia) | 449.54 mi (723.46 km) |
| Delaware to Monroe (Louisiana) | 733.11 mi (1,179.83 km) |
| Delaware to Monroe (Michigan) | 113.81 mi (183.15 km) |
| Delaware to Monroe (North Carolina) | 389.76 mi (627.26 km) |
| Delaware to Monroe (Ohio) | 89.77 mi (144.48 km) |
