| San Marino to Mount Washington (Kentucky) | 1,828.61 mi (2,942.86 km) |
| San Marino to Mountain Brook (Alabama) | 1,794.62 mi (2,888.16 km) |
| San Marino to Mountain Home (Arkansas) | 1,455.85 mi (2,342.96 km) |
| San Marino to Mountain Home (Idaho) | 635.96 mi (1,023.49 km) |
| San Marino to Mountain House (California) | 316.60 mi (509.52 km) |
| San Marino to Mountain Park (Georgia) | 1,937.84 mi (3,118.65 km) |
| San Marino to Mountain Top (Pennsylvania) | 2,336.32 mi (3,759.95 km) |
| San Marino to Mountain View (California) | 317.33 mi (510.70 km) |
| San Marino to Mountlake Terrace (Washington) | 969.12 mi (1,559.65 km) |
| San Marino to Mukilteo (Washington) | 976.94 mi (1,572.23 km) |
| San Marino to Muncie (Indiana) | 1,838.73 mi (2,959.15 km) |
| San Marino to Mundelein (Illinois) | 1,718.16 mi (2,765.12 km) |
| San Marino to Munhall (Pennsylvania) | 2,128.43 mi (3,425.38 km) |
| San Marino to Munster (Indiana) | 1,736.88 mi (2,795.24 km) |
| San Marino to Murfreesboro (Tennessee) | 1,790.67 mi (2,881.80 km) |
