| San Marino to Marrero (Louisiana) | 1,661.10 mi (2,673.27 km) |
| San Marino to Marshall (Minnesota) | 1,383.96 mi (2,227.27 km) |
| San Marino to Marshall (Missouri) | 1,419.01 mi (2,283.67 km) |
| San Marino to Marshall (Texas) | 1,373.01 mi (2,209.65 km) |
| San Marino to Marshalltown (Iowa) | 1,469.06 mi (2,364.22 km) |
| San Marino to Marshfield (Wisconsin) | 1,649.00 mi (2,653.81 km) |
| San Marino to Martha Lake (Washington) | 972.00 mi (1,564.28 km) |
| San Marino to Martin (Tennessee) | 1,652.27 mi (2,659.06 km) |
| San Marino to Martinez (California) | 348.79 mi (561.33 km) |
| San Marino to Martinez (Georgia) | 2,056.85 mi (3,310.19 km) |
| San Marino to Martinsburg (West Virginia) | 2,232.49 mi (3,592.85 km) |
| San Marino to Martinsville (Indiana) | 1,781.61 mi (2,867.22 km) |
| San Marino to Martinsville (New Jersey) | 2,407.47 mi (3,874.46 km) |
| San Marino to Martinsville (Virginia) | 2,147.18 mi (3,455.56 km) |
| San Marino to Maryland City (Maryland) | 2,296.74 mi (3,696.24 km) |
