| Gross-Enzersdorf to Marco de Canavezes | 1,299.38 mi (2,091.14 km) |
| Gross-Enzersdorf to Marinha Grande | 1,386.54 mi (2,231.43 km) |
| Gross-Enzersdorf to Massama | 1,440.33 mi (2,317.98 km) |
| Gross-Enzersdorf to Matosinhos | 1,324.12 mi (2,130.96 km) |
| Gross-Enzersdorf to Mealhada | 1,341.40 mi (2,158.78 km) |
| Gross-Enzersdorf to Melgaco | 1,273.38 mi (2,049.30 km) |
| Gross-Enzersdorf to Melres | 1,314.67 mi (2,115.76 km) |
| Gross-Enzersdorf to Mira | 1,352.23 mi (2,176.20 km) |
| Gross-Enzersdorf to Miranda do Corvo | 1,346.71 mi (2,167.32 km) |
| Gross-Enzersdorf to Mirandela | 1,245.45 mi (2,004.35 km) |
| Gross-Enzersdorf to Mogadouro | 1,229.91 mi (1,979.35 km) |
| Gross-Enzersdorf to Moimenta da Beira | 1,282.50 mi (2,063.98 km) |
| Gross-Enzersdorf to Moita | 1,431.82 mi (2,304.29 km) |
| Gross-Enzersdorf to Moncao | 1,284.45 mi (2,067.12 km) |
| Gross-Enzersdorf to Montalegre | 1,261.48 mi (2,030.15 km) |
