| South San Francisco to Manerbio | 5,986.46 mi (9,634.28 km) |
| South San Francisco to Manfredonia | 6,361.79 mi (10,238.31 km) |
| South San Francisco to Maniago | 6,012.32 mi (9,675.90 km) |
| South San Francisco to Mantova | 6,016.87 mi (9,683.22 km) |
| South San Francisco to Maranello | 6,054.16 mi (9,743.24 km) |
| South San Francisco to Marano di Napoli | 6,356.37 mi (10,229.59 km) |
| South San Francisco to Marano Vicentino | 6,004.04 mi (9,662.56 km) |
| South San Francisco to Marcianise | 6,351.95 mi (10,222.47 km) |
| South San Francisco to Marcon | 6,036.07 mi (9,714.12 km) |
| South San Francisco to Mareno di Piave | 6,021.14 mi (9,690.08 km) |
| South San Francisco to Margherita di Savoia | 6,383.80 mi (10,273.74 km) |
| South San Francisco to Mariano Comense | 5,940.77 mi (9,560.75 km) |
| South San Francisco to Marigliano | 6,362.00 mi (10,238.64 km) |
| South San Francisco to Marino | 6,263.02 mi (10,079.35 km) |
| South San Francisco to Marostica | 6,007.56 mi (9,668.23 km) |
