| Preakness to Maryland Heights (Missouri) | 874.47 mi (1,407.33 km) |
| Preakness to Marysville (California) | 2,477.14 mi (3,986.57 km) |
| Preakness to Marysville (Ohio) | 481.65 mi (775.13 km) |
| Preakness to Marysville (Washington) | 2,372.68 mi (3,818.46 km) |
| Preakness to Maryville (Missouri) | 1,080.71 mi (1,739.24 km) |
| Preakness to Maryville (Tennessee) | 638.19 mi (1,027.07 km) |
| Preakness to Mason (Ohio) | 543.03 mi (873.92 km) |
| Preakness to Mason City (Iowa) | 983.37 mi (1,582.59 km) |
| Preakness to Massapequa (New York) | 43.62 mi (70.21 km) |
| Preakness to Massapequa Park (New York) | 44.22 mi (71.16 km) |
| Preakness to Massillon (Ohio) | 381.56 mi (614.07 km) |
| Preakness to Mastic (New York) | 72.45 mi (116.60 km) |
| Preakness to Mastic Beach (New York) | 73.47 mi (118.23 km) |
| Preakness to Matteson (Illinois) | 703.13 mi (1,131.58 km) |
| Preakness to Matthews (North Carolina) | 534.68 mi (860.48 km) |
