| Oregon to Mangualde | 3,803.18 mi (6,120.63 km) |
| Oregon to Marco de Canavezes | 3,766.60 mi (6,061.76 km) |
| Oregon to Marinha Grande | 3,776.24 mi (6,077.27 km) |
| Oregon to Massama | 3,792.65 mi (6,103.69 km) |
| Oregon to Matosinhos | 3,741.19 mi (6,020.87 km) |
| Oregon to Mealhada | 3,778.33 mi (6,080.63 km) |
| Oregon to Melgaco | 3,731.84 mi (6,005.82 km) |
| Oregon to Melres | 3,758.76 mi (6,049.14 km) |
| Oregon to Mira | 3,763.53 mi (6,056.81 km) |
| Oregon to Miranda do Corvo | 3,792.93 mi (6,104.14 km) |
| Oregon to Mirandela | 3,801.49 mi (6,117.91 km) |
| Oregon to Mogadouro | 3,827.71 mi (6,160.10 km) |
| Oregon to Moimenta da Beira | 3,797.87 mi (6,112.09 km) |
| Oregon to Moita | 3,809.99 mi (6,131.58 km) |
| Oregon to Moncao | 3,723.43 mi (5,992.28 km) |
