| Langenfeld to Marco de Canavezes | 993.13 mi (1,598.29 km) |
| Langenfeld to Marinha Grande | 1,095.42 mi (1,762.92 km) |
| Langenfeld to Massama | 1,160.67 mi (1,867.92 km) |
| Langenfeld to Matosinhos | 1,012.13 mi (1,628.86 km) |
| Langenfeld to Mealhada | 1,045.38 mi (1,682.38 km) |
| Langenfeld to Melgaco | 949.69 mi (1,528.37 km) |
| Langenfeld to Melres | 1,007.77 mi (1,621.85 km) |
| Langenfeld to Mira | 1,052.31 mi (1,693.52 km) |
| Langenfeld to Miranda do Corvo | 1,056.64 mi (1,700.50 km) |
| Langenfeld to Mirandela | 944.50 mi (1,520.03 km) |
| Langenfeld to Mogadouro | 937.13 mi (1,508.17 km) |
| Langenfeld to Moimenta da Beira | 985.67 mi (1,586.29 km) |
| Langenfeld to Moita | 1,157.09 mi (1,862.16 km) |
| Langenfeld to Moncao | 959.44 mi (1,544.07 km) |
| Langenfeld to Montalegre | 947.81 mi (1,525.35 km) |
