| Southlake to Mangualde | 4,757.01 mi (7,655.67 km) |
| Southlake to Marco de Canavezes | 4,721.37 mi (7,598.31 km) |
| Southlake to Marinha Grande | 4,726.89 mi (7,607.20 km) |
| Southlake to Massama | 4,740.16 mi (7,628.55 km) |
| Southlake to Matosinhos | 4,695.52 mi (7,556.71 km) |
| Southlake to Mealhada | 4,731.04 mi (7,613.87 km) |
| Southlake to Melgaco | 4,688.38 mi (7,545.22 km) |
| Southlake to Melres | 4,713.08 mi (7,584.96 km) |
| Southlake to Mira | 4,716.10 mi (7,589.83 km) |
| Southlake to Miranda do Corvo | 4,745.07 mi (7,636.45 km) |
| Southlake to Mirandela | 4,757.60 mi (7,656.61 km) |
| Southlake to Mogadouro | 4,783.86 mi (7,698.88 km) |
| Southlake to Moimenta da Beira | 4,752.64 mi (7,648.64 km) |
| Southlake to Moita | 4,757.52 mi (7,656.49 km) |
| Southlake to Moncao | 4,679.74 mi (7,531.32 km) |
