| Gadsden to Mangualde | 4,181.46 mi (6,729.40 km) |
| Gadsden to Marco de Canavezes | 4,148.18 mi (6,675.85 km) |
| Gadsden to Marinha Grande | 4,145.03 mi (6,670.78 km) |
| Gadsden to Massama | 4,152.90 mi (6,683.44 km) |
| Gadsden to Matosinhos | 4,121.40 mi (6,632.76 km) |
| Gadsden to Mealhada | 4,153.18 mi (6,683.89 km) |
| Gadsden to Melgaco | 4,120.04 mi (6,630.56 km) |
| Gadsden to Melres | 4,138.85 mi (6,660.83 km) |
| Gadsden to Mira | 4,138.02 mi (6,659.50 km) |
| Gadsden to Miranda do Corvo | 4,165.96 mi (6,704.46 km) |
| Gadsden to Mirandela | 4,187.69 mi (6,739.44 km) |
| Gadsden to Mogadouro | 4,213.95 mi (6,781.70 km) |
| Gadsden to Moimenta da Beira | 4,179.30 mi (6,725.93 km) |
| Gadsden to Moita | 4,170.23 mi (6,711.33 km) |
| Gadsden to Moncao | 4,110.80 mi (6,615.69 km) |
