| Markham to Mangualde | 4,000.58 mi (6,438.32 km) |
| Markham to Marco de Canavezes | 3,963.25 mi (6,378.23 km) |
| Markham to Marinha Grande | 3,975.98 mi (6,398.72 km) |
| Markham to Massama | 3,994.28 mi (6,428.17 km) |
| Markham to Matosinhos | 3,938.24 mi (6,337.99 km) |
| Markham to Mealhada | 3,976.63 mi (6,399.76 km) |
| Markham to Melgaco | 3,926.83 mi (6,319.63 km) |
| Markham to Melres | 3,955.80 mi (6,366.25 km) |
| Markham to Mira | 3,961.95 mi (6,376.14 km) |
| Markham to Miranda do Corvo | 3,991.64 mi (6,423.93 km) |
| Markham to Mirandela | 3,996.86 mi (6,432.32 km) |
| Markham to Mogadouro | 4,023.00 mi (6,474.39 km) |
| Markham to Moimenta da Beira | 3,994.49 mi (6,428.51 km) |
| Markham to Moita | 4,011.58 mi (6,456.01 km) |
| Markham to Moncao | 3,918.66 mi (6,306.47 km) |
