| Merrifield to Mangualde | 3,592.96 mi (5,782.31 km) |
| Merrifield to Marco de Canavezes | 3,559.14 mi (5,727.88 km) |
| Merrifield to Marinha Grande | 3,558.18 mi (5,726.33 km) |
| Merrifield to Massama | 3,567.83 mi (5,741.86 km) |
| Merrifield to Matosinhos | 3,532.54 mi (5,685.08 km) |
| Merrifield to Mealhada | 3,565.22 mi (5,737.67 km) |
| Merrifield to Melgaco | 3,530.07 mi (5,681.11 km) |
| Merrifield to Melres | 3,550.03 mi (5,713.22 km) |
| Merrifield to Mira | 3,550.11 mi (5,713.35 km) |
| Merrifield to Miranda do Corvo | 3,578.34 mi (5,758.78 km) |
| Merrifield to Mirandela | 3,598.03 mi (5,790.48 km) |
| Merrifield to Mogadouro | 3,624.31 mi (5,832.76 km) |
| Merrifield to Moimenta da Beira | 3,590.31 mi (5,778.04 km) |
| Merrifield to Moita | 3,585.18 mi (5,769.79 km) |
| Merrifield to Moncao | 3,520.93 mi (5,666.39 km) |
