| Boppard to Marco de Canavezes | 980.21 mi (1,577.49 km) |
| Boppard to Marinha Grande | 1,080.22 mi (1,738.44 km) |
| Boppard to Massama | 1,143.70 mi (1,840.60 km) |
| Boppard to Matosinhos | 1,000.59 mi (1,610.30 km) |
| Boppard to Mealhada | 1,030.77 mi (1,658.86 km) |
| Boppard to Melgaco | 940.20 mi (1,513.10 km) |
| Boppard to Melres | 995.11 mi (1,601.47 km) |
| Boppard to Mira | 1,038.55 mi (1,671.39 km) |
| Boppard to Miranda do Corvo | 1,040.91 mi (1,675.19 km) |
| Boppard to Mirandela | 930.01 mi (1,496.70 km) |
| Boppard to Mogadouro | 920.87 mi (1,481.99 km) |
| Boppard to Moimenta da Beira | 970.71 mi (1,562.21 km) |
| Boppard to Moita | 1,139.15 mi (1,833.28 km) |
| Boppard to Moncao | 950.33 mi (1,529.42 km) |
| Boppard to Montalegre | 936.08 mi (1,506.47 km) |
