| Grosse Pointe Woods to Mangualde | 3,754.96 mi (6,043.03 km) |
| Grosse Pointe Woods to Marco de Canavezes | 3,718.08 mi (5,983.68 km) |
| Grosse Pointe Woods to Marinha Grande | 3,728.96 mi (6,001.19 km) |
| Grosse Pointe Woods to Massama | 3,746.20 mi (6,028.93 km) |
| Grosse Pointe Woods to Matosinhos | 3,692.83 mi (5,943.03 km) |
| Grosse Pointe Woods to Mealhada | 3,730.46 mi (6,003.59 km) |
| Grosse Pointe Woods to Melgaco | 3,682.71 mi (5,926.76 km) |
| Grosse Pointe Woods to Melres | 3,710.40 mi (5,971.31 km) |
| Grosse Pointe Woods to Mira | 3,715.70 mi (5,979.85 km) |
| Grosse Pointe Woods to Miranda do Corvo | 3,745.23 mi (6,027.37 km) |
| Grosse Pointe Woods to Mirandela | 3,752.51 mi (6,039.08 km) |
| Grosse Pointe Woods to Mogadouro | 3,778.70 mi (6,081.23 km) |
| Grosse Pointe Woods to Moimenta da Beira | 3,749.35 mi (6,034.00 km) |
| Grosse Pointe Woods to Moita | 3,763.52 mi (6,056.80 km) |
| Grosse Pointe Woods to Moncao | 3,674.39 mi (5,913.35 km) |
