| Gloucester City to Mangualde | 3,460.40 mi (5,568.97 km) |
| Gloucester City to Marco de Canavezes | 3,426.43 mi (5,514.30 km) |
| Gloucester City to Marinha Grande | 3,426.07 mi (5,513.73 km) |
| Gloucester City to Massama | 3,436.21 mi (5,530.05 km) |
| Gloucester City to Matosinhos | 3,399.88 mi (5,471.58 km) |
| Gloucester City to Mealhada | 3,432.81 mi (5,524.58 km) |
| Gloucester City to Melgaco | 3,397.10 mi (5,467.10 km) |
| Gloucester City to Melres | 3,417.37 mi (5,499.73 km) |
| Gloucester City to Mira | 3,417.72 mi (5,500.29 km) |
| Gloucester City to Miranda do Corvo | 3,446.03 mi (5,545.84 km) |
| Gloucester City to Mirandela | 3,465.14 mi (5,576.61 km) |
| Gloucester City to Mogadouro | 3,491.42 mi (5,618.90 km) |
| Gloucester City to Moimenta da Beira | 3,457.61 mi (5,564.48 km) |
| Gloucester City to Moita | 3,453.57 mi (5,557.99 km) |
| Gloucester City to Moncao | 3,387.98 mi (5,452.43 km) |
