| Le Locle to Mangualde | 847.44 mi (1,363.83 km) |
| Le Locle to Marco de Canavezes | 840.99 mi (1,353.45 km) |
| Le Locle to Marinha Grande | 932.42 mi (1,500.58 km) |
| Le Locle to Massama | 989.98 mi (1,593.21 km) |
| Le Locle to Matosinhos | 864.85 mi (1,391.84 km) |
| Le Locle to Mealhada | 885.63 mi (1,425.28 km) |
| Le Locle to Melgaco | 812.03 mi (1,306.84 km) |
| Le Locle to Melres | 856.29 mi (1,378.06 km) |
| Le Locle to Mira | 895.63 mi (1,441.38 km) |
| Le Locle to Miranda do Corvo | 892.48 mi (1,436.30 km) |
| Le Locle to Mirandela | 787.65 mi (1,267.60 km) |
| Le Locle to Mogadouro | 773.77 mi (1,245.26 km) |
| Le Locle to Moimenta da Beira | 825.97 mi (1,329.27 km) |
| Le Locle to Moita | 982.93 mi (1,581.87 km) |
| Le Locle to Moncao | 823.01 mi (1,324.50 km) |
