| Fort Walton Beach to Mangualde | 4,343.65 mi (6,990.43 km) |
| Fort Walton Beach to Marco de Canavezes | 4,312.07 mi (6,939.60 km) |
| Fort Walton Beach to Marinha Grande | 4,303.00 mi (6,925.01 km) |
| Fort Walton Beach to Massama | 4,306.88 mi (6,931.26 km) |
| Fort Walton Beach to Matosinhos | 4,284.78 mi (6,895.68 km) |
| Fort Walton Beach to Mealhada | 4,313.92 mi (6,942.58 km) |
| Fort Walton Beach to Melgaco | 4,287.12 mi (6,899.46 km) |
| Fort Walton Beach to Melres | 4,302.09 mi (6,923.54 km) |
| Fort Walton Beach to Mira | 4,298.67 mi (6,918.04 km) |
| Fort Walton Beach to Miranda do Corvo | 4,325.79 mi (6,961.69 km) |
| Fort Walton Beach to Mirandela | 4,353.54 mi (7,006.34 km) |
| Fort Walton Beach to Mogadouro | 4,379.71 mi (7,048.46 km) |
| Fort Walton Beach to Moimenta da Beira | 4,342.96 mi (6,989.32 km) |
| Fort Walton Beach to Moita | 4,324.12 mi (6,959.00 km) |
| Fort Walton Beach to Moncao | 4,277.54 mi (6,884.04 km) |
