| Chattanooga to Mangualde | 4,106.39 mi (6,608.60 km) |
| Chattanooga to Marco de Canavezes | 4,072.77 mi (6,554.49 km) |
| Chattanooga to Marinha Grande | 4,070.90 mi (6,551.47 km) |
| Chattanooga to Massama | 4,079.65 mi (6,565.55 km) |
| Chattanooga to Matosinhos | 4,046.11 mi (6,511.59 km) |
| Chattanooga to Mealhada | 4,078.44 mi (6,563.61 km) |
| Chattanooga to Melgaco | 4,043.96 mi (6,508.13 km) |
| Chattanooga to Melres | 4,063.58 mi (6,539.70 km) |
| Chattanooga to Mira | 4,063.31 mi (6,539.26 km) |
| Chattanooga to Miranda do Corvo | 4,091.41 mi (6,584.49 km) |
| Chattanooga to Mirandela | 4,111.85 mi (6,617.39 km) |
| Chattanooga to Mogadouro | 4,138.13 mi (6,659.67 km) |
| Chattanooga to Moimenta da Beira | 4,103.92 mi (6,604.62 km) |
| Chattanooga to Moita | 4,096.99 mi (6,593.46 km) |
| Chattanooga to Moncao | 4,034.80 mi (6,493.38 km) |
