| Corvallis to Mangualde | 5,325.08 mi (8,569.89 km) |
| Corvallis to Marco de Canavezes | 5,281.64 mi (8,499.98 km) |
| Corvallis to Marinha Grande | 5,328.27 mi (8,575.02 km) |
| Corvallis to Massama | 5,367.29 mi (8,637.82 km) |
| Corvallis to Matosinhos | 5,262.61 mi (8,469.36 km) |
| Corvallis to Mealhada | 5,312.57 mi (8,549.76 km) |
| Corvallis to Melgaco | 5,229.46 mi (8,416.01 km) |
| Corvallis to Melres | 5,279.02 mi (8,495.76 km) |
| Corvallis to Mira | 5,300.08 mi (8,529.66 km) |
| Corvallis to Miranda do Corvo | 5,331.30 mi (8,579.91 km) |
| Corvallis to Mirandela | 5,299.15 mi (8,528.16 km) |
| Corvallis to Mogadouro | 5,322.88 mi (8,566.35 km) |
| Corvallis to Moimenta da Beira | 5,310.67 mi (8,546.70 km) |
| Corvallis to Moita | 5,383.26 mi (8,663.51 km) |
| Corvallis to Moncao | 5,224.40 mi (8,407.86 km) |
