| San Luis to Mangualde | 5,570.50 mi (8,964.85 km) |
| San Luis to Marco de Canavezes | 5,530.92 mi (8,901.15 km) |
| San Luis to Marinha Grande | 5,553.45 mi (8,937.42 km) |
| San Luis to Massama | 5,577.33 mi (8,975.85 km) |
| San Luis to Matosinhos | 5,507.39 mi (8,863.29 km) |
| San Luis to Mealhada | 5,549.57 mi (8,931.18 km) |
| San Luis to Melgaco | 5,489.22 mi (8,834.05 km) |
| San Luis to Melres | 5,524.82 mi (8,891.34 km) |
| San Luis to Mira | 5,535.35 mi (8,908.29 km) |
| San Luis to Miranda do Corvo | 5,565.81 mi (8,957.30 km) |
| San Luis to Mirandela | 5,560.02 mi (8,947.99 km) |
| San Luis to Mogadouro | 5,585.74 mi (8,989.38 km) |
| San Luis to Moimenta da Beira | 5,561.87 mi (8,950.96 km) |
| San Luis to Moita | 5,594.46 mi (9,003.41 km) |
| San Luis to Moncao | 5,481.92 mi (8,822.30 km) |
