| Chambersburg to Mangualde | 3,581.72 mi (5,764.23 km) |
| Chambersburg to Marco de Canavezes | 3,547.20 mi (5,708.66 km) |
| Chambersburg to Marinha Grande | 3,548.85 mi (5,711.33 km) |
| Chambersburg to Massama | 3,560.23 mi (5,729.63 km) |
| Chambersburg to Matosinhos | 3,520.87 mi (5,666.29 km) |
| Chambersburg to Mealhada | 3,554.67 mi (5,720.69 km) |
| Chambersburg to Melgaco | 3,516.73 mi (5,659.63 km) |
| Chambersburg to Melres | 3,538.39 mi (5,694.49 km) |
| Chambersburg to Mira | 3,539.63 mi (5,696.48 km) |
| Chambersburg to Miranda do Corvo | 3,568.17 mi (5,742.42 km) |
| Chambersburg to Mirandela | 3,585.16 mi (5,769.75 km) |
| Chambersburg to Mogadouro | 3,611.44 mi (5,812.06 km) |
| Chambersburg to Moimenta da Beira | 3,578.42 mi (5,758.91 km) |
| Chambersburg to Moita | 3,577.59 mi (5,757.57 km) |
| Chambersburg to Moncao | 3,507.75 mi (5,645.18 km) |
