| Preakness to Morris (Illinois) | 738.81 mi (1,189.01 km) |
| Preakness to Morristown (New Jersey) | 16.44 mi (26.46 km) |
| Preakness to Morristown (Tennessee) | 588.86 mi (947.68 km) |
| Preakness to Morrisville (North Carolina) | 431.80 mi (694.92 km) |
| Preakness to Morro Bay (California) | 2,532.01 mi (4,074.88 km) |
| Preakness to Morton (Illinois) | 796.84 mi (1,282.39 km) |
| Preakness to Morton Grove (Illinois) | 705.43 mi (1,135.29 km) |
| Preakness to Moscow (Idaho) | 2,141.79 mi (3,446.88 km) |
| Preakness to Moses Lake (Washington) | 2,246.15 mi (3,614.83 km) |
| Preakness to Moss Bluff (Louisiana) | 1,290.16 mi (2,076.31 km) |
| Preakness to Moss Point (Mississippi) | 1,080.04 mi (1,738.16 km) |
| Preakness to Moultrie (Georgia) | 859.61 mi (1,383.40 km) |
| Preakness to Mounds View (Minnesota) | 998.54 mi (1,606.99 km) |
| Preakness to Mount Airy (North Carolina) | 460.61 mi (741.27 km) |
| Preakness to Mount Clemens (Michigan) | 460.43 mi (740.99 km) |
