| Denver to Mangualde | 4,828.25 mi (7,770.31 km) |
| Denver to Marco de Canavezes | 4,788.48 mi (7,706.31 km) |
| Denver to Marinha Grande | 4,812.17 mi (7,744.43 km) |
| Denver to Massama | 4,837.06 mi (7,784.50 km) |
| Denver to Matosinhos | 4,765.10 mi (7,668.69 km) |
| Denver to Mealhada | 4,807.66 mi (7,737.19 km) |
| Denver to Melgaco | 4,746.44 mi (7,638.66 km) |
| Denver to Melres | 4,782.51 mi (7,696.70 km) |
| Denver to Mira | 4,793.51 mi (7,714.40 km) |
| Denver to Miranda do Corvo | 4,824.04 mi (7,763.54 km) |
| Denver to Mirandela | 4,817.26 mi (7,752.63 km) |
| Denver to Mogadouro | 4,842.94 mi (7,793.96 km) |
| Denver to Moimenta da Beira | 4,819.39 mi (7,756.07 km) |
| Denver to Moita | 4,854.14 mi (7,811.98 km) |
| Denver to Moncao | 4,739.19 mi (7,626.99 km) |
