| Olesno to Marco de Canavezes | 1,428.66 mi (2,299.20 km) |
| Olesno to Marinha Grande | 1,522.24 mi (2,449.81 km) |
| Olesno to Massama | 1,580.50 mi (2,543.57 km) |
| Olesno to Matosinhos | 1,451.56 mi (2,336.06 km) |
| Olesno to Mealhada | 1,474.87 mi (2,373.57 km) |
| Olesno to Melgaco | 1,395.72 mi (2,246.19 km) |
| Olesno to Melres | 1,443.90 mi (2,323.73 km) |
| Olesno to Mira | 1,484.43 mi (2,388.95 km) |
| Olesno to Miranda do Corvo | 1,482.32 mi (2,385.56 km) |
| Olesno to Mirandela | 1,375.95 mi (2,214.38 km) |
| Olesno to Mogadouro | 1,363.08 mi (2,193.67 km) |
| Olesno to Moimenta da Beira | 1,414.96 mi (2,277.16 km) |
| Olesno to Moita | 1,573.54 mi (2,532.36 km) |
| Olesno to Moncao | 1,406.40 mi (2,263.39 km) |
| Olesno to Montalegre | 1,387.52 mi (2,233.00 km) |
