| Lake Ronkonkoma to Mangualde | 3,337.88 mi (5,371.81 km) |
| Lake Ronkonkoma to Marco de Canavezes | 3,303.75 mi (5,316.86 km) |
| Lake Ronkonkoma to Marinha Grande | 3,304.07 mi (5,317.39 km) |
| Lake Ronkonkoma to Massama | 3,314.75 mi (5,334.57 km) |
| Lake Ronkonkoma to Matosinhos | 3,277.26 mi (5,274.25 km) |
| Lake Ronkonkoma to Mealhada | 3,310.48 mi (5,327.70 km) |
| Lake Ronkonkoma to Melgaco | 3,274.12 mi (5,269.18 km) |
| Lake Ronkonkoma to Melres | 3,294.76 mi (5,302.41 km) |
| Lake Ronkonkoma to Mira | 3,295.40 mi (5,303.43 km) |
| Lake Ronkonkoma to Miranda do Corvo | 3,323.79 mi (5,349.12 km) |
| Lake Ronkonkoma to Mirandela | 3,342.26 mi (5,378.84 km) |
| Lake Ronkonkoma to Mogadouro | 3,368.54 mi (5,421.14 km) |
| Lake Ronkonkoma to Moimenta da Beira | 3,334.94 mi (5,367.06 km) |
| Lake Ronkonkoma to Moita | 3,332.11 mi (5,362.51 km) |
| Lake Ronkonkoma to Moncao | 3,265.03 mi (5,254.56 km) |
