| Middle River to Morristown (New Jersey) | 143.83 mi (231.48 km) |
| Middle River to Morristown (Tennessee) | 433.42 mi (697.52 km) |
| Middle River to Morrisville (North Carolina) | 275.85 mi (443.94 km) |
| Middle River to Morro Bay (California) | 2,430.65 mi (3,911.75 km) |
| Middle River to Morton (Illinois) | 695.39 mi (1,119.12 km) |
| Middle River to Morton Grove (Illinois) | 623.27 mi (1,003.05 km) |
| Middle River to Moscow (Idaho) | 2,086.77 mi (3,358.34 km) |
| Middle River to Moses Lake (Washington) | 2,193.60 mi (3,530.26 km) |
| Middle River to Moss Bluff (Louisiana) | 1,135.42 mi (1,827.28 km) |
| Middle River to Moss Point (Mississippi) | 920.59 mi (1,481.55 km) |
| Middle River to Moultrie (Georgia) | 700.54 mi (1,127.40 km) |
| Middle River to Mounds View (Minnesota) | 944.09 mi (1,519.37 km) |
| Middle River to Mount Airy (North Carolina) | 300.82 mi (484.12 km) |
| Middle River to Mount Clemens (Michigan) | 404.80 mi (651.46 km) |
| Middle River to Mount Dora (Florida) | 785.83 mi (1,264.67 km) |
