| Allentown to Mangualde | 3,458.08 mi (5,565.23 km) |
| Allentown to Marco de Canavezes | 3,423.61 mi (5,509.76 km) |
| Allentown to Marinha Grande | 3,425.11 mi (5,512.18 km) |
| Allentown to Massama | 3,436.46 mi (5,530.45 km) |
| Allentown to Matosinhos | 3,397.25 mi (5,467.35 km) |
| Allentown to Mealhada | 3,430.98 mi (5,521.63 km) |
| Allentown to Melgaco | 3,393.28 mi (5,460.96 km) |
| Allentown to Melres | 3,414.77 mi (5,495.54 km) |
| Allentown to Mira | 3,415.93 mi (5,497.41 km) |
| Allentown to Miranda do Corvo | 3,444.46 mi (5,543.32 km) |
| Allentown to Mirandela | 3,461.66 mi (5,571.00 km) |
| Allentown to Mogadouro | 3,487.94 mi (5,613.30 km) |
| Allentown to Moimenta da Beira | 3,454.82 mi (5,560.00 km) |
| Allentown to Moita | 3,453.82 mi (5,558.39 km) |
| Allentown to Moncao | 3,384.28 mi (5,446.48 km) |
