| South San Francisco to Merriam (Kansas) | 1,499.80 mi (2,413.69 km) |
| South San Francisco to Merrick (New York) | 2,592.67 mi (4,172.49 km) |
| South San Francisco to Merrifield (Virginia) | 2,426.95 mi (3,905.81 km) |
| South San Francisco to Merrillville (Indiana) | 1,875.11 mi (3,017.70 km) |
| South San Francisco to Merritt Island (Florida) | 2,482.38 mi (3,995.01 km) |
| South San Francisco to Mesa (Arizona) | 669.08 mi (1,076.78 km) |
| South San Francisco to Mesquite (Nevada) | 459.50 mi (739.49 km) |
| South San Francisco to Mesquite (Texas) | 1,491.94 mi (2,401.04 km) |
| South San Francisco to Metairie (Louisiana) | 1,914.17 mi (3,080.55 km) |
| South San Francisco to Methuen Town (Massachusetts) | 2,684.91 mi (4,320.95 km) |
| South San Francisco to Metuchen (New Jersey) | 2,552.61 mi (4,108.02 km) |
| South San Francisco to Mexico (Missouri) | 1,649.42 mi (2,654.49 km) |
| South San Francisco to Miami (Florida) | 2,588.36 mi (4,165.56 km) |
| South San Francisco to Miami (Oklahoma) | 1,510.18 mi (2,430.40 km) |
| South San Francisco to Miami Beach (Florida) | 2,591.08 mi (4,169.95 km) |
