| Southern Pines to Mangualde | 3,815.00 mi (6,139.64 km) |
| Southern Pines to Marco de Canavezes | 3,782.81 mi (6,087.85 km) |
| Southern Pines to Marinha Grande | 3,775.97 mi (6,076.84 km) |
| Southern Pines to Massama | 3,781.61 mi (6,085.92 km) |
| Southern Pines to Matosinhos | 3,755.69 mi (6,044.20 km) |
| Southern Pines to Mealhada | 3,785.79 mi (6,092.64 km) |
| Southern Pines to Melgaco | 3,756.86 mi (6,046.08 km) |
| Southern Pines to Melres | 3,773.05 mi (6,072.14 km) |
| Southern Pines to Mira | 3,770.57 mi (6,068.14 km) |
| Southern Pines to Miranda do Corvo | 3,798.02 mi (6,112.32 km) |
| Southern Pines to Mirandela | 3,823.67 mi (6,153.60 km) |
| Southern Pines to Mogadouro | 3,849.87 mi (6,195.77 km) |
| Southern Pines to Moimenta da Beira | 3,813.79 mi (6,137.71 km) |
| Southern Pines to Moita | 3,798.90 mi (6,113.74 km) |
| Southern Pines to Moncao | 3,747.38 mi (6,030.82 km) |
