| Lake Oswego to Mangualde | 5,263.90 mi (8,471.44 km) |
| Lake Oswego to Marco de Canavezes | 5,220.40 mi (8,401.42 km) |
| Lake Oswego to Marinha Grande | 5,267.57 mi (8,477.34 km) |
| Lake Oswego to Massama | 5,306.95 mi (8,540.71 km) |
| Lake Oswego to Matosinhos | 5,201.49 mi (8,370.99 km) |
| Lake Oswego to Mealhada | 5,251.60 mi (8,451.64 km) |
| Lake Oswego to Melgaco | 5,168.02 mi (8,317.12 km) |
| Lake Oswego to Melres | 5,217.86 mi (8,397.34 km) |
| Lake Oswego to Mira | 5,239.16 mi (8,431.62 km) |
| Lake Oswego to Miranda do Corvo | 5,270.38 mi (8,481.86 km) |
| Lake Oswego to Mirandela | 5,237.64 mi (8,429.16 km) |
| Lake Oswego to Mogadouro | 5,261.31 mi (8,467.25 km) |
| Lake Oswego to Moimenta da Beira | 5,249.37 mi (8,448.04 km) |
| Lake Oswego to Moita | 5,322.87 mi (8,566.34 km) |
| Lake Oswego to Moncao | 5,163.01 mi (8,309.06 km) |
