| Boulder City to Mangualde | 5,423.50 mi (8,728.28 km) |
| Boulder City to Marco de Canavezes | 5,382.99 mi (8,663.08 km) |
| Boulder City to Marinha Grande | 5,410.36 mi (8,707.14 km) |
| Boulder City to Massama | 5,437.37 mi (8,750.60 km) |
| Boulder City to Matosinhos | 5,360.24 mi (8,626.47 km) |
| Boulder City to Mealhada | 5,404.13 mi (8,697.11 km) |
| Boulder City to Melgaco | 5,339.07 mi (8,592.41 km) |
| Boulder City to Melres | 5,377.54 mi (8,654.32 km) |
| Boulder City to Mira | 5,390.19 mi (8,674.67 km) |
| Boulder City to Miranda do Corvo | 5,420.93 mi (8,724.14 km) |
| Boulder City to Mirandela | 5,409.97 mi (8,706.50 km) |
| Boulder City to Mogadouro | 5,435.41 mi (8,747.44 km) |
| Boulder City to Moimenta da Beira | 5,413.70 mi (8,712.51 km) |
| Boulder City to Moita | 5,454.34 mi (8,777.91 km) |
| Boulder City to Moncao | 5,332.17 mi (8,581.30 km) |
