| San Francisco to Mangualde | 5,631.04 mi (9,062.28 km) |
| San Francisco to Marco de Canavezes | 5,588.82 mi (8,994.34 km) |
| San Francisco to Marinha Grande | 5,626.23 mi (9,054.54 km) |
| San Francisco to Massama | 5,659.45 mi (9,108.01 km) |
| San Francisco to Matosinhos | 5,567.90 mi (8,960.66 km) |
| San Francisco to Mealhada | 5,615.12 mi (9,036.67 km) |
| San Francisco to Melgaco | 5,540.41 mi (8,916.42 km) |
| San Francisco to Melres | 5,584.82 mi (8,987.90 km) |
| San Francisco to Mira | 5,601.86 mi (9,015.32 km) |
| San Francisco to Miranda do Corvo | 5,632.99 mi (9,065.42 km) |
| San Francisco to Mirandela | 5,610.99 mi (9,030.02 km) |
| San Francisco to Mogadouro | 5,635.66 mi (9,069.71 km) |
| San Francisco to Moimenta da Beira | 5,618.80 mi (9,042.59 km) |
| San Francisco to Moita | 5,676.00 mi (9,134.63 km) |
| San Francisco to Moncao | 5,534.43 mi (8,906.81 km) |
