| Redwood City to Mangualde | 5,635.18 mi (9,068.95 km) |
| Redwood City to Marco de Canavezes | 5,593.05 mi (9,001.14 km) |
| Redwood City to Marinha Grande | 5,629.92 mi (9,060.48 km) |
| Redwood City to Massama | 5,662.81 mi (9,113.41 km) |
| Redwood City to Matosinhos | 5,572.02 mi (8,967.30 km) |
| Redwood City to Mealhada | 5,619.07 mi (9,043.03 km) |
| Redwood City to Melgaco | 5,544.86 mi (8,923.59 km) |
| Redwood City to Melres | 5,588.96 mi (8,994.57 km) |
| Redwood City to Mira | 5,605.77 mi (9,021.62 km) |
| Redwood City to Miranda do Corvo | 5,636.89 mi (9,071.69 km) |
| Redwood City to Mirandela | 5,615.48 mi (9,037.25 km) |
| Redwood City to Mogadouro | 5,640.19 mi (9,077.01 km) |
| Redwood City to Moimenta da Beira | 5,623.07 mi (9,049.46 km) |
| Redwood City to Moita | 5,679.38 mi (9,140.07 km) |
| Redwood City to Moncao | 5,538.84 mi (8,913.90 km) |
