| Key West to Morristown (New Jersey) | 1,198.06 mi (1,928.10 km) |
| Key West to Morristown (Tennessee) | 809.32 mi (1,302.48 km) |
| Key West to Morrisville (North Carolina) | 798.31 mi (1,284.76 km) |
| Key West to Morro Bay (California) | 2,437.07 mi (3,922.08 km) |
| Key West to Morton (Illinois) | 1,194.58 mi (1,922.49 km) |
| Key West to Morton Grove (Illinois) | 1,255.65 mi (2,020.78 km) |
| Key West to Moscow (Idaho) | 2,467.42 mi (3,970.92 km) |
| Key West to Moses Lake (Washington) | 2,576.40 mi (4,146.31 km) |
| Key West to Moss Bluff (Louisiana) | 804.53 mi (1,294.77 km) |
| Key West to Moss Point (Mississippi) | 578.65 mi (931.25 km) |
| Key West to Moultrie (Georgia) | 471.62 mi (759.00 km) |
| Key West to Mounds View (Minnesota) | 1,556.67 mi (2,505.22 km) |
| Key West to Mount Airy (North Carolina) | 828.13 mi (1,332.74 km) |
| Key West to Mount Clemens (Michigan) | 1,247.58 mi (2,007.79 km) |
| Key West to Mount Dora (Florida) | 293.78 mi (472.79 km) |
