| Canals to McKeesport (Pennsylvania) | 4,065.12 mi (6,542.18 km) |
| Canals to McKinleyville (California) | 5,869.80 mi (9,446.53 km) |
| Canals to McKinney (Texas) | 5,113.95 mi (8,230.11 km) |
| Canals to McLean (Virginia) | 3,982.29 mi (6,408.88 km) |
| Canals to McMinnville (Oregon) | 5,618.07 mi (9,041.41 km) |
| Canals to McMinnville (Tennessee) | 4,503.83 mi (7,248.21 km) |
| Canals to McNair (Virginia) | 3,992.51 mi (6,425.32 km) |
| Canals to McPherson (Kansas) | 4,948.80 mi (7,964.33 km) |
| Canals to Mead Valley (California) | 5,981.20 mi (9,625.81 km) |
| Canals to Meadow Woods (Florida) | 4,552.00 mi (7,325.74 km) |
| Canals to Meadowbrook (Virginia) | 4,043.15 mi (6,506.83 km) |
| Canals to Meadville (Pennsylvania) | 4,039.02 mi (6,500.17 km) |
| Canals to Mebane (North Carolina) | 4,174.77 mi (6,718.65 km) |
| Canals to Mechanicsville (Virginia) | 4,031.20 mi (6,487.58 km) |
| Canals to Medford (Massachusetts) | 3,593.34 mi (5,782.93 km) |
