| New Smyrna Beach to Mangualde | 4,110.72 mi (6,615.56 km) |
| New Smyrna Beach to Marco de Canavezes | 4,081.68 mi (6,568.83 km) |
| New Smyrna Beach to Marinha Grande | 4,064.48 mi (6,541.15 km) |
| New Smyrna Beach to Massama | 4,063.05 mi (6,538.85 km) |
| New Smyrna Beach to Matosinhos | 4,053.81 mi (6,523.98 km) |
| New Smyrna Beach to Mealhada | 4,079.11 mi (6,564.70 km) |
| New Smyrna Beach to Melgaco | 4,061.48 mi (6,536.32 km) |
| New Smyrna Beach to Melres | 4,070.83 mi (6,551.37 km) |
| New Smyrna Beach to Mira | 4,063.81 mi (6,540.08 km) |
| New Smyrna Beach to Miranda do Corvo | 4,089.68 mi (6,581.71 km) |
| New Smyrna Beach to Mirandela | 4,125.75 mi (6,639.76 km) |
| New Smyrna Beach to Mogadouro | 4,151.65 mi (6,681.43 km) |
| New Smyrna Beach to Moimenta da Beira | 4,112.11 mi (6,617.80 km) |
| New Smyrna Beach to Moita | 4,080.09 mi (6,566.27 km) |
| New Smyrna Beach to Moncao | 4,051.45 mi (6,520.17 km) |
