| Canals to Marshall (Minnesota) | 4,632.52 mi (7,455.32 km) |
| Canals to Marshall (Missouri) | 4,721.60 mi (7,598.68 km) |
| Canals to Marshall (Texas) | 5,032.39 mi (8,098.84 km) |
| Canals to Marshalltown (Iowa) | 4,599.55 mi (7,402.26 km) |
| Canals to Marshfield (Wisconsin) | 4,388.40 mi (7,062.45 km) |
| Canals to Martha Lake (Washington) | 5,452.10 mi (8,774.31 km) |
| Canals to Martin (Tennessee) | 4,625.76 mi (7,444.43 km) |
| Canals to Martinez (California) | 5,954.28 mi (9,582.49 km) |
| Canals to Martinez (Georgia) | 4,401.95 mi (7,084.25 km) |
| Canals to Martinsburg (West Virginia) | 4,004.02 mi (6,443.84 km) |
| Canals to Martinsville (Indiana) | 4,402.67 mi (7,085.41 km) |
| Canals to Martinsville (New Jersey) | 3,807.50 mi (6,127.58 km) |
| Canals to Martinsville (Virginia) | 4,183.73 mi (6,733.06 km) |
| Canals to Maryland City (Maryland) | 3,958.73 mi (6,370.96 km) |
| Canals to Maryland Heights (Missouri) | 4,613.13 mi (7,424.12 km) |
