| Echelon to Mangualde | 3,455.75 mi (5,561.49 km) |
| Echelon to Marco de Canavezes | 3,421.83 mi (5,506.91 km) |
| Echelon to Marinha Grande | 3,421.29 mi (5,506.03 km) |
| Echelon to Massama | 3,431.31 mi (5,522.16 km) |
| Echelon to Matosinhos | 3,395.27 mi (5,464.16 km) |
| Echelon to Mealhada | 3,428.12 mi (5,517.03 km) |
| Echelon to Melgaco | 3,392.61 mi (5,459.88 km) |
| Echelon to Melres | 3,412.76 mi (5,492.31 km) |
| Echelon to Mira | 3,413.02 mi (5,492.72 km) |
| Echelon to Miranda do Corvo | 3,441.30 mi (5,538.24 km) |
| Echelon to Mirandela | 3,460.62 mi (5,569.33 km) |
| Echelon to Mogadouro | 3,486.90 mi (5,611.62 km) |
| Echelon to Moimenta da Beira | 3,453.01 mi (5,557.08 km) |
| Echelon to Moita | 3,448.66 mi (5,550.09 km) |
| Echelon to Moncao | 3,383.48 mi (5,445.19 km) |
