| South San Francisco to Missouri City (Texas) | 1,637.88 mi (2,635.92 km) |
| South San Francisco to Mitchell (South Dakota) | 1,338.98 mi (2,154.87 km) |
| South San Francisco to Mitchellville (Maryland) | 2,448.46 mi (3,940.42 km) |
| South San Francisco to Moberly (Missouri) | 1,617.60 mi (2,603.27 km) |
| South San Francisco to Mobile (Alabama) | 2,007.43 mi (3,230.65 km) |
| South San Francisco to Modesto (California) | 77.52 mi (124.75 km) |
| South San Francisco to Mokena (Illinois) | 1,846.02 mi (2,970.87 km) |
| South San Francisco to Moline (Illinois) | 1,711.04 mi (2,753.66 km) |
| South San Francisco to Moncks Corner (South Carolina) | 2,387.72 mi (3,842.67 km) |
| South San Francisco to Monfort Heights (Ohio) | 2,034.80 mi (3,274.69 km) |
| South San Francisco to Monmouth (Oregon) | 499.01 mi (803.08 km) |
| South San Francisco to Monroe (Georgia) | 2,171.78 mi (3,495.13 km) |
| South San Francisco to Monroe (Louisiana) | 1,743.80 mi (2,806.37 km) |
| South San Francisco to Monroe (Michigan) | 2,075.23 mi (3,339.76 km) |
| South San Francisco to Monroe (North Carolina) | 2,317.93 mi (3,730.35 km) |
