| Pittsburg to Mangualde | 5,597.17 mi (9,007.77 km) |
| Pittsburg to Marco de Canavezes | 5,554.98 mi (8,939.88 km) |
| Pittsburg to Marinha Grande | 5,592.17 mi (8,999.73 km) |
| Pittsburg to Massama | 5,625.28 mi (9,053.01 km) |
| Pittsburg to Matosinhos | 5,534.01 mi (8,906.13 km) |
| Pittsburg to Mealhada | 5,581.17 mi (8,982.02 km) |
| Pittsburg to Melgaco | 5,506.66 mi (8,862.12 km) |
| Pittsburg to Melres | 5,550.95 mi (8,933.38 km) |
| Pittsburg to Mira | 5,567.89 mi (8,960.66 km) |
| Pittsburg to Miranda do Corvo | 5,599.02 mi (9,010.75 km) |
| Pittsburg to Mirandela | 5,577.27 mi (8,975.75 km) |
| Pittsburg to Mogadouro | 5,601.95 mi (9,015.47 km) |
| Pittsburg to Moimenta da Beira | 5,584.98 mi (8,988.16 km) |
| Pittsburg to Moita | 5,641.83 mi (9,079.64 km) |
| Pittsburg to Moncao | 5,500.67 mi (8,852.47 km) |
