| Storm Lake to Mangualde | 4,299.85 mi (6,919.93 km) |
| Storm Lake to Marco de Canavezes | 4,260.77 mi (6,857.05 km) |
| Storm Lake to Marinha Grande | 4,281.24 mi (6,889.99 km) |
| Storm Lake to Massama | 4,304.33 mi (6,927.15 km) |
| Storm Lake to Matosinhos | 4,236.87 mi (6,818.58 km) |
| Storm Lake to Mealhada | 4,278.23 mi (6,885.14 km) |
| Storm Lake to Melgaco | 4,220.42 mi (6,792.12 km) |
| Storm Lake to Melres | 4,254.34 mi (6,846.70 km) |
| Storm Lake to Mira | 4,263.90 mi (6,862.09 km) |
| Storm Lake to Miranda do Corvo | 4,294.22 mi (6,910.88 km) |
| Storm Lake to Mirandela | 4,291.09 mi (6,905.84 km) |
| Storm Lake to Mogadouro | 4,316.95 mi (6,947.46 km) |
| Storm Lake to Moimenta da Beira | 4,291.82 mi (6,907.02 km) |
| Storm Lake to Moita | 4,321.48 mi (6,954.76 km) |
| Storm Lake to Moncao | 4,212.87 mi (6,779.96 km) |
