| Hackettstown to Mangualde | 3,419.77 mi (5,503.59 km) |
| Hackettstown to Marco de Canavezes | 3,385.27 mi (5,448.07 km) |
| Hackettstown to Marinha Grande | 3,386.89 mi (5,450.67 km) |
| Hackettstown to Massama | 3,398.34 mi (5,469.11 km) |
| Hackettstown to Matosinhos | 3,358.93 mi (5,405.67 km) |
| Hackettstown to Mealhada | 3,392.70 mi (5,460.03 km) |
| Hackettstown to Melgaco | 3,354.91 mi (5,399.20 km) |
| Hackettstown to Melres | 3,376.45 mi (5,433.87 km) |
| Hackettstown to Mira | 3,377.65 mi (5,435.81 km) |
| Hackettstown to Miranda do Corvo | 3,406.20 mi (5,481.75 km) |
| Hackettstown to Mirandela | 3,423.30 mi (5,509.26 km) |
| Hackettstown to Mogadouro | 3,449.58 mi (5,551.57 km) |
| Hackettstown to Moimenta da Beira | 3,416.49 mi (5,498.31 km) |
| Hackettstown to Moita | 3,415.71 mi (5,497.05 km) |
| Hackettstown to Moncao | 3,345.91 mi (5,384.73 km) |
