| Panama City to Mangualde | 4,301.11 mi (6,921.96 km) |
| Panama City to Marco de Canavezes | 4,269.95 mi (6,871.81 km) |
| Panama City to Marinha Grande | 4,259.47 mi (6,854.96 km) |
| Panama City to Massama | 4,262.44 mi (6,859.74 km) |
| Panama City to Matosinhos | 4,242.55 mi (6,827.72 km) |
| Panama City to Mealhada | 4,271.03 mi (6,873.57 km) |
| Panama City to Melgaco | 4,245.81 mi (6,832.97 km) |
| Panama City to Melres | 4,259.81 mi (6,855.51 km) |
| Panama City to Mira | 4,255.77 mi (6,849.00 km) |
| Panama City to Miranda do Corvo | 4,282.69 mi (6,892.33 km) |
| Panama City to Mirandela | 4,311.89 mi (6,939.31 km) |
| Panama City to Mogadouro | 4,338.02 mi (6,981.37 km) |
| Panama City to Moimenta da Beira | 4,300.78 mi (6,921.43 km) |
| Panama City to Moita | 4,279.65 mi (6,887.44 km) |
| Panama City to Moncao | 4,236.15 mi (6,817.42 km) |
