| Harper Woods to Mangualde | 3,756.30 mi (6,045.18 km) |
| Harper Woods to Marco de Canavezes | 3,719.42 mi (5,985.82 km) |
| Harper Woods to Marinha Grande | 3,730.32 mi (6,003.37 km) |
| Harper Woods to Massama | 3,747.58 mi (6,031.14 km) |
| Harper Woods to Matosinhos | 3,694.16 mi (5,945.18 km) |
| Harper Woods to Mealhada | 3,731.80 mi (6,005.76 km) |
| Harper Woods to Melgaco | 3,684.03 mi (5,928.88 km) |
| Harper Woods to Melres | 3,711.73 mi (5,973.45 km) |
| Harper Woods to Mira | 3,717.05 mi (5,982.02 km) |
| Harper Woods to Miranda do Corvo | 3,746.58 mi (6,029.54 km) |
| Harper Woods to Mirandela | 3,753.83 mi (6,041.20 km) |
| Harper Woods to Mogadouro | 3,780.02 mi (6,083.35 km) |
| Harper Woods to Moimenta da Beira | 3,750.68 mi (6,036.14 km) |
| Harper Woods to Moita | 3,764.90 mi (6,059.01 km) |
| Harper Woods to Moncao | 3,675.70 mi (5,915.47 km) |
