| Preakness to Marrero (Louisiana) | 1,172.82 mi (1,887.47 km) |
| Preakness to Marshall (Minnesota) | 1,118.18 mi (1,799.54 km) |
| Preakness to Marshall (Missouri) | 1,009.87 mi (1,625.23 km) |
| Preakness to Marshall (Texas) | 1,252.35 mi (2,015.47 km) |
| Preakness to Marshalltown (Iowa) | 968.02 mi (1,557.87 km) |
| Preakness to Marshfield (Wisconsin) | 846.85 mi (1,362.87 km) |
| Preakness to Martha Lake (Washington) | 2,378.00 mi (3,827.03 km) |
| Preakness to Martin (Tennessee) | 849.63 mi (1,367.35 km) |
| Preakness to Martinez (California) | 2,530.56 mi (4,072.54 km) |
| Preakness to Martinez (Georgia) | 670.43 mi (1,078.95 km) |
| Preakness to Martinsburg (West Virginia) | 222.89 mi (358.71 km) |
| Preakness to Martinsville (Indiana) | 652.42 mi (1,049.97 km) |
| Preakness to Martinsville (New Jersey) | 29.56 mi (47.56 km) |
| Preakness to Martinsville (Virginia) | 422.48 mi (679.91 km) |
| Preakness to Maryland City (Maryland) | 186.40 mi (299.99 km) |
