| Gretz-Armainvilliers to Marco de Canavezes | 744.15 mi (1,197.60 km) |
| Gretz-Armainvilliers to Marinha Grande | 846.29 mi (1,361.98 km) |
| Gretz-Armainvilliers to Massama | 911.65 mi (1,467.16 km) |
| Gretz-Armainvilliers to Matosinhos | 763.44 mi (1,228.64 km) |
| Gretz-Armainvilliers to Mealhada | 796.26 mi (1,281.45 km) |
| Gretz-Armainvilliers to Melgaco | 701.64 mi (1,129.17 km) |
| Gretz-Armainvilliers to Melres | 758.84 mi (1,221.23 km) |
| Gretz-Armainvilliers to Mira | 803.24 mi (1,292.69 km) |
| Gretz-Armainvilliers to Miranda do Corvo | 807.52 mi (1,299.59 km) |
| Gretz-Armainvilliers to Mirandela | 695.38 mi (1,119.10 km) |
| Gretz-Armainvilliers to Mogadouro | 688.09 mi (1,107.37 km) |
| Gretz-Armainvilliers to Moimenta da Beira | 736.55 mi (1,185.35 km) |
| Gretz-Armainvilliers to Moita | 908.23 mi (1,461.66 km) |
| Gretz-Armainvilliers to Moncao | 711.56 mi (1,145.14 km) |
| Gretz-Armainvilliers to Montalegre | 699.04 mi (1,125.00 km) |
