| Duluth to Marshall (Minnesota) | 238.64 mi (384.06 km) |
| Duluth to Marshall (Missouri) | 532.02 mi (856.20 km) |
| Duluth to Marshall (Texas) | 990.69 mi (1,594.37 km) |
| Duluth to Marshalltown (Iowa) | 329.77 mi (530.71 km) |
| Duluth to Marshfield (Wisconsin) | 174.09 mi (280.17 km) |
| Duluth to Martha Lake (Washington) | 1,402.77 mi (2,257.53 km) |
| Duluth to Martin (Tennessee) | 740.72 mi (1,192.07 km) |
| Duluth to Martinez (California) | 1,633.25 mi (2,628.47 km) |
| Duluth to Martinez (Georgia) | 1,056.25 mi (1,699.88 km) |
| Duluth to Martinsburg (West Virginia) | 872.95 mi (1,404.87 km) |
| Duluth to Martinsville (Indiana) | 584.06 mi (939.96 km) |
| Duluth to Martinsville (New Jersey) | 972.76 mi (1,565.51 km) |
| Duluth to Martinsville (Virginia) | 939.57 mi (1,512.09 km) |
| Duluth to Maryland City (Maryland) | 936.93 mi (1,507.84 km) |
| Duluth to Maryland Heights (Missouri) | 563.00 mi (906.05 km) |
