| Severn to Marrero (Louisiana) | 993.94 mi (1,599.59 km) |
| Severn to Marshall (Minnesota) | 1,046.86 mi (1,684.75 km) |
| Severn to Marshall (Missouri) | 883.48 mi (1,421.82 km) |
| Severn to Marshall (Texas) | 1,086.50 mi (1,748.54 km) |
| Severn to Marshalltown (Iowa) | 872.45 mi (1,404.06 km) |
| Severn to Marshfield (Wisconsin) | 789.92 mi (1,271.25 km) |
| Severn to Martha Lake (Washington) | 2,324.33 mi (3,740.64 km) |
| Severn to Martin (Tennessee) | 691.12 mi (1,112.24 km) |
| Severn to Martinez (California) | 2,429.01 mi (3,909.12 km) |
| Severn to Martinez (Georgia) | 490.64 mi (789.61 km) |
| Severn to Martinsburg (West Virginia) | 72.08 mi (116.01 km) |
| Severn to Martinsville (Indiana) | 520.85 mi (838.22 km) |
| Severn to Martinsville (New Jersey) | 151.40 mi (243.66 km) |
| Severn to Martinsville (Virginia) | 241.93 mi (389.36 km) |
| Severn to Maryland City (Maryland) | 6.32 mi (10.17 km) |
