| Altoona to Mangualde | 3,600.62 mi (5,794.64 km) |
| Altoona to Marco de Canavezes | 3,565.61 mi (5,738.30 km) |
| Altoona to Marinha Grande | 3,569.09 mi (5,743.89 km) |
| Altoona to Massama | 3,581.63 mi (5,764.08 km) |
| Altoona to Matosinhos | 3,539.48 mi (5,696.24 km) |
| Altoona to Mealhada | 3,574.06 mi (5,751.89 km) |
| Altoona to Melgaco | 3,534.17 mi (5,687.69 km) |
| Altoona to Melres | 3,557.02 mi (5,724.47 km) |
| Altoona to Mira | 3,559.06 mi (5,727.75 km) |
| Altoona to Miranda do Corvo | 3,587.81 mi (5,774.03 km) |
| Altoona to Mirandela | 3,602.90 mi (5,798.31 km) |
| Altoona to Mogadouro | 3,629.19 mi (5,840.61 km) |
| Altoona to Moimenta da Beira | 3,596.86 mi (5,788.59 km) |
| Altoona to Moita | 3,598.99 mi (5,792.02 km) |
| Altoona to Moncao | 3,525.31 mi (5,673.44 km) |
