| Gunbarrel to Mangualde | 4,828.38 mi (7,770.53 km) |
| Gunbarrel to Marco de Canavezes | 4,788.47 mi (7,706.29 km) |
| Gunbarrel to Marinha Grande | 4,812.89 mi (7,745.59 km) |
| Gunbarrel to Massama | 4,838.25 mi (7,786.41 km) |
| Gunbarrel to Matosinhos | 4,765.20 mi (7,668.86 km) |
| Gunbarrel to Mealhada | 4,808.03 mi (7,737.78 km) |
| Gunbarrel to Melgaco | 4,746.08 mi (7,638.08 km) |
| Gunbarrel to Melres | 4,782.59 mi (7,696.84 km) |
| Gunbarrel to Mira | 4,793.91 mi (7,715.06 km) |
| Gunbarrel to Miranda do Corvo | 4,824.49 mi (7,764.26 km) |
| Gunbarrel to Mirandela | 4,816.92 mi (7,752.09 km) |
| Gunbarrel to Mogadouro | 4,842.57 mi (7,793.36 km) |
| Gunbarrel to Moimenta da Beira | 4,819.35 mi (7,755.99 km) |
| Gunbarrel to Moita | 4,855.30 mi (7,813.86 km) |
| Gunbarrel to Moncao | 4,738.89 mi (7,626.51 km) |
