| Duluth to Morristown (New Jersey) | 970.16 mi (1,561.31 km) |
| Duluth to Morristown (Tennessee) | 860.59 mi (1,384.98 km) |
| Duluth to Morrisville (North Carolina) | 1,020.94 mi (1,643.04 km) |
| Duluth to Morro Bay (California) | 1,677.13 mi (2,699.08 km) |
| Duluth to Morton (Illinois) | 446.13 mi (717.97 km) |
| Duluth to Morton Grove (Illinois) | 391.08 mi (629.39 km) |
| Duluth to Moscow (Idaho) | 1,171.88 mi (1,885.95 km) |
| Duluth to Moses Lake (Washington) | 1,273.65 mi (2,049.74 km) |
| Duluth to Moss Bluff (Louisiana) | 1,139.51 mi (1,833.87 km) |
| Duluth to Moss Point (Mississippi) | 1,146.14 mi (1,844.54 km) |
| Duluth to Moultrie (Georgia) | 1,167.25 mi (1,878.50 km) |
| Duluth to Mounds View (Minnesota) | 126.19 mi (203.08 km) |
| Duluth to Mount Airy (North Carolina) | 923.89 mi (1,486.86 km) |
| Duluth to Mount Clemens (Michigan) | 538.08 mi (865.96 km) |
| Duluth to Mount Dora (Florida) | 1,364.23 mi (2,195.52 km) |
