| North Myrtle Beach to Mangualde | 3,826.20 mi (6,157.68 km) |
| North Myrtle Beach to Marco de Canavezes | 3,795.02 mi (6,107.49 km) |
| North Myrtle Beach to Marinha Grande | 3,784.80 mi (6,091.05 km) |
| North Myrtle Beach to Massama | 3,788.20 mi (6,096.52 km) |
| North Myrtle Beach to Matosinhos | 3,767.62 mi (6,063.40 km) |
| North Myrtle Beach to Mealhada | 3,796.18 mi (6,109.37 km) |
| North Myrtle Beach to Melgaco | 3,770.95 mi (6,068.75 km) |
| North Myrtle Beach to Melres | 3,784.89 mi (6,091.19 km) |
| North Myrtle Beach to Mira | 3,780.92 mi (6,084.81 km) |
| North Myrtle Beach to Miranda do Corvo | 3,807.89 mi (6,128.21 km) |
| North Myrtle Beach to Mirandela | 3,836.98 mi (6,175.02 km) |
| North Myrtle Beach to Mogadouro | 3,863.10 mi (6,217.06 km) |
| North Myrtle Beach to Moimenta da Beira | 3,825.85 mi (6,157.10 km) |
| North Myrtle Beach to Moita | 3,805.43 mi (6,124.25 km) |
| North Myrtle Beach to Moncao | 3,761.27 mi (6,053.18 km) |
