| Horn-Bad Meinberg to Marco de Canavezes | 1,094.31 mi (1,761.13 km) |
| Horn-Bad Meinberg to Marinha Grande | 1,196.27 mi (1,925.21 km) |
| Horn-Bad Meinberg to Massama | 1,261.18 mi (2,029.67 km) |
| Horn-Bad Meinberg to Matosinhos | 1,113.48 mi (1,791.98 km) |
| Horn-Bad Meinberg to Mealhada | 1,146.32 mi (1,844.82 km) |
| Horn-Bad Meinberg to Melgaco | 1,051.21 mi (1,691.75 km) |
| Horn-Bad Meinberg to Melres | 1,108.99 mi (1,784.75 km) |
| Horn-Bad Meinberg to Mira | 1,153.38 mi (1,856.19 km) |
| Horn-Bad Meinberg to Miranda do Corvo | 1,157.37 mi (1,862.61 km) |
| Horn-Bad Meinberg to Mirandela | 1,045.43 mi (1,682.45 km) |
| Horn-Bad Meinberg to Mogadouro | 1,037.72 mi (1,670.04 km) |
| Horn-Bad Meinberg to Moimenta da Beira | 1,086.53 mi (1,748.60 km) |
| Horn-Bad Meinberg to Moita | 1,257.38 mi (2,023.55 km) |
| Horn-Bad Meinberg to Moncao | 1,060.99 mi (1,707.49 km) |
| Horn-Bad Meinberg to Montalegre | 1,049.13 mi (1,688.41 km) |
