| South San Francisco to Marrero (Louisiana) | 1,920.92 mi (3,091.43 km) |
| South San Francisco to Marshall (Minnesota) | 1,457.13 mi (2,345.02 km) |
| South San Francisco to Marshall (Missouri) | 1,578.87 mi (2,540.94 km) |
| South San Francisco to Marshall (Texas) | 1,619.17 mi (2,605.80 km) |
| South San Francisco to Marshalltown (Iowa) | 1,586.38 mi (2,553.03 km) |
| South San Francisco to Marshfield (Wisconsin) | 1,733.29 mi (2,789.45 km) |
| South San Francisco to Martha Lake (Washington) | 704.41 mi (1,133.63 km) |
| South San Francisco to Martin (Tennessee) | 1,844.74 mi (2,968.83 km) |
| South San Francisco to Martinez (California) | 29.01 mi (46.69 km) |
| South San Francisco to Martinez (Georgia) | 2,266.06 mi (3,646.88 km) |
| South San Francisco to Martinsburg (West Virginia) | 2,380.02 mi (3,830.28 km) |
| South San Francisco to Martinsville (Indiana) | 1,935.96 mi (3,115.63 km) |
| South San Francisco to Martinsville (New Jersey) | 2,540.85 mi (4,089.11 km) |
| South San Francisco to Martinsville (Virginia) | 2,323.63 mi (3,739.52 km) |
| South San Francisco to Maryland City (Maryland) | 2,446.47 mi (3,937.22 km) |
