| Forest Park to Mangualde | 3,928.86 mi (6,322.90 km) |
| Forest Park to Marco de Canavezes | 3,893.25 mi (6,265.58 km) |
| Forest Park to Marinha Grande | 3,898.94 mi (6,274.74 km) |
| Forest Park to Massama | 3,912.73 mi (6,296.93 km) |
| Forest Park to Matosinhos | 3,867.38 mi (6,223.95 km) |
| Forest Park to Mealhada | 3,902.91 mi (6,281.13 km) |
| Forest Park to Melgaco | 3,860.49 mi (6,212.85 km) |
| Forest Park to Melres | 3,884.94 mi (6,252.20 km) |
| Forest Park to Mira | 3,887.98 mi (6,257.10 km) |
| Forest Park to Miranda do Corvo | 3,916.98 mi (6,303.77 km) |
| Forest Park to Mirandela | 3,929.62 mi (6,324.11 km) |
| Forest Park to Mogadouro | 3,955.89 mi (6,366.38 km) |
| Forest Park to Moimenta da Beira | 3,924.52 mi (6,315.91 km) |
| Forest Park to Moita | 3,930.09 mi (6,324.87 km) |
| Forest Park to Moncao | 3,851.81 mi (6,198.88 km) |
