| Great Neck to Mangualde | 3,368.55 mi (5,421.16 km) |
| Great Neck to Marco de Canavezes | 3,334.30 mi (5,366.04 km) |
| Great Neck to Marinha Grande | 3,335.01 mi (5,367.19 km) |
| Great Neck to Massama | 3,345.91 mi (5,384.73 km) |
| Great Neck to Matosinhos | 3,307.86 mi (5,323.49 km) |
| Great Neck to Mealhada | 3,341.24 mi (5,377.21 km) |
| Great Neck to Melgaco | 3,304.45 mi (5,318.00 km) |
| Great Neck to Melres | 3,325.37 mi (5,351.66 km) |
| Great Neck to Mira | 3,326.17 mi (5,352.96 km) |
| Great Neck to Miranda do Corvo | 3,354.61 mi (5,398.72 km) |
| Great Neck to Mirandela | 3,372.67 mi (5,427.79 km) |
| Great Neck to Mogadouro | 3,398.95 mi (5,470.08 km) |
| Great Neck to Moimenta da Beira | 3,365.50 mi (5,416.26 km) |
| Great Neck to Moita | 3,363.27 mi (5,412.67 km) |
| Great Neck to Moncao | 3,295.39 mi (5,303.42 km) |
