| Webster to Mangualde | 4,797.57 mi (7,720.95 km) |
| Webster to Marco de Canavezes | 4,763.95 mi (7,666.84 km) |
| Webster to Marinha Grande | 4,761.85 mi (7,663.45 km) |
| Webster to Massama | 4,770.11 mi (7,676.74 km) |
| Webster to Matosinhos | 4,737.30 mi (7,623.94 km) |
| Webster to Mealhada | 4,769.57 mi (7,675.89 km) |
| Webster to Melgaco | 4,735.00 mi (7,620.25 km) |
| Webster to Melres | 4,754.77 mi (7,652.06 km) |
| Webster to Mira | 4,754.44 mi (7,651.53 km) |
| Webster to Miranda do Corvo | 4,782.51 mi (7,696.70 km) |
| Webster to Mirandela | 4,802.96 mi (7,729.62 km) |
| Webster to Mogadouro | 4,829.24 mi (7,771.90 km) |
| Webster to Moimenta da Beira | 4,795.10 mi (7,716.97 km) |
| Webster to Moita | 4,787.44 mi (7,704.64 km) |
| Webster to Moncao | 4,725.86 mi (7,605.54 km) |
