| South San Francisco to Melzo | 5,958.59 mi (9,589.42 km) |
| South San Francisco to Mendicino | 6,508.80 mi (10,474.89 km) |
| South San Francisco to Menfi | 6,510.41 mi (10,477.50 km) |
| South San Francisco to Mentana | 6,248.22 mi (10,055.53 km) |
| South San Francisco to Merano | 5,941.64 mi (9,562.14 km) |
| South San Francisco to Merate | 5,947.92 mi (9,572.25 km) |
| South San Francisco to Mercato San Severino | 6,379.66 mi (10,267.07 km) |
| South San Francisco to Mercogliano | 6,370.85 mi (10,252.88 km) |
| South San Francisco to Mesagne | 6,475.57 mi (10,421.42 km) |
| South San Francisco to Messina | 6,553.28 mi (10,546.48 km) |
| South San Francisco to Mestre | 6,038.04 mi (9,717.28 km) |
| South San Francisco to Mestrino | 6,027.42 mi (9,700.20 km) |
| South San Francisco to Milan | 5,953.93 mi (9,581.92 km) |
| South San Francisco to Milazzo | 6,542.72 mi (10,529.50 km) |
| South San Francisco to Minerbio | 6,066.49 mi (9,763.07 km) |
