| Duluth to Monticello (Minnesota) | 129.41 mi (208.27 km) |
| Duluth to Montrose (Colorado) | 980.98 mi (1,578.74 km) |
| Duluth to Moody (Alabama) | 957.27 mi (1,540.57 km) |
| Duluth to Moore (Oklahoma) | 837.80 mi (1,348.31 km) |
| Duluth to Moorestown-Lenola (New Jersey) | 979.61 mi (1,576.53 km) |
| Duluth to Mooresville (North Carolina) | 969.45 mi (1,560.17 km) |
| Duluth to Moorhead (Minnesota) | 217.86 mi (350.62 km) |
| Duluth to Moorpark (California) | 1,635.83 mi (2,632.62 km) |
| Duluth to Moraga (California) | 1,639.14 mi (2,637.94 km) |
| Duluth to Moreno Valley (California) | 1,579.70 mi (2,542.29 km) |
| Duluth to Morgan City (Louisiana) | 1,180.62 mi (1,900.03 km) |
| Duluth to Morgan Hill (California) | 1,643.31 mi (2,644.65 km) |
| Duluth to Morganton (North Carolina) | 933.77 mi (1,502.76 km) |
| Duluth to Morgantown (West Virginia) | 786.00 mi (1,264.94 km) |
| Duluth to Morris (Illinois) | 415.98 mi (669.45 km) |
