| Rockport to Mangualde | 4,954.40 mi (7,973.33 km) |
| Rockport to Marco de Canavezes | 4,920.87 mi (7,919.38 km) |
| Rockport to Marinha Grande | 4,918.36 mi (7,915.33 km) |
| Rockport to Massama | 4,926.27 mi (7,928.07 km) |
| Rockport to Matosinhos | 4,894.19 mi (7,876.43 km) |
| Rockport to Mealhada | 4,926.30 mi (7,928.11 km) |
| Rockport to Melgaco | 4,892.10 mi (7,873.07 km) |
| Rockport to Melres | 4,911.65 mi (7,904.54 km) |
| Rockport to Mira | 4,911.15 mi (7,903.73 km) |
| Rockport to Miranda do Corvo | 4,939.16 mi (7,948.82 km) |
| Rockport to Mirandela | 4,960.00 mi (7,982.35 km) |
| Rockport to Mogadouro | 4,986.27 mi (8,024.63 km) |
| Rockport to Moimenta da Beira | 4,952.02 mi (7,969.50 km) |
| Rockport to Moita | 4,943.60 mi (7,955.96 km) |
| Rockport to Moncao | 4,882.94 mi (7,858.33 km) |
