| Olecko to Marco de Canavezes | 1,661.55 mi (2,674.01 km) |
| Olecko to Marinha Grande | 1,759.71 mi (2,831.97 km) |
| Olecko to Massama | 1,821.29 mi (2,931.08 km) |
| Olecko to Matosinhos | 1,682.61 mi (2,707.90 km) |
| Olecko to Mealhada | 1,710.88 mi (2,753.39 km) |
| Olecko to Melgaco | 1,622.96 mi (2,611.91 km) |
| Olecko to Melres | 1,676.58 mi (2,698.19 km) |
| Olecko to Mira | 1,719.26 mi (2,766.87 km) |
| Olecko to Miranda do Corvo | 1,720.08 mi (2,768.20 km) |
| Olecko to Mirandela | 1,610.48 mi (2,591.82 km) |
| Olecko to Mogadouro | 1,600.00 mi (2,574.95 km) |
| Olecko to Moimenta da Beira | 1,650.72 mi (2,656.58 km) |
| Olecko to Moita | 1,815.68 mi (2,922.05 km) |
| Olecko to Moncao | 1,633.18 mi (2,628.35 km) |
| Olecko to Montalegre | 1,618.10 mi (2,604.08 km) |
