| San Diego to Mangualde | 5,656.89 mi (9,103.89 km) |
| San Diego to Marco de Canavezes | 5,616.71 mi (9,039.22 km) |
| San Diego to Marinha Grande | 5,642.26 mi (9,080.34 km) |
| San Diego to Massama | 5,668.01 mi (9,121.79 km) |
| San Diego to Matosinhos | 5,593.67 mi (9,002.15 km) |
| San Diego to Mealhada | 5,636.93 mi (9,071.77 km) |
| San Diego to Melgaco | 5,573.59 mi (8,969.83 km) |
| San Diego to Melres | 5,611.03 mi (9,030.08 km) |
| San Diego to Mira | 5,622.88 mi (9,049.15 km) |
| San Diego to Miranda do Corvo | 5,653.52 mi (9,098.46 km) |
| San Diego to Mirandela | 5,644.47 mi (9,083.89 km) |
| San Diego to Mogadouro | 5,670.01 mi (9,125.00 km) |
| San Diego to Moimenta da Beira | 5,647.52 mi (9,088.81 km) |
| San Diego to Moita | 5,685.05 mi (9,149.21 km) |
| San Diego to Moncao | 5,566.54 mi (8,958.49 km) |
