| Norristown to Mangualde | 3,464.71 mi (5,575.91 km) |
| Norristown to Marco de Canavezes | 3,430.55 mi (5,520.94 km) |
| Norristown to Marinha Grande | 3,430.89 mi (5,521.48 km) |
| Norristown to Massama | 3,441.47 mi (5,538.51 km) |
| Norristown to Matosinhos | 3,404.08 mi (5,478.34 km) |
| Norristown to Mealhada | 3,437.31 mi (5,531.81 km) |
| Norristown to Melgaco | 3,400.85 mi (5,473.14 km) |
| Norristown to Melres | 3,421.58 mi (5,506.50 km) |
| Norristown to Mira | 3,422.23 mi (5,507.54 km) |
| Norristown to Miranda do Corvo | 3,450.62 mi (5,553.23 km) |
| Norristown to Mirandela | 3,469.02 mi (5,582.85 km) |
| Norristown to Mogadouro | 3,495.31 mi (5,625.15 km) |
| Norristown to Moimenta da Beira | 3,461.75 mi (5,571.14 km) |
| Norristown to Moita | 3,458.83 mi (5,566.45 km) |
| Norristown to Moncao | 3,391.78 mi (5,458.54 km) |
