| Ostringen to Marco de Canavezes | 987.51 mi (1,589.24 km) |
| Ostringen to Marinha Grande | 1,083.91 mi (1,744.39 km) |
| Ostringen to Massama | 1,144.71 mi (1,842.23 km) |
| Ostringen to Matosinhos | 1,009.56 mi (1,624.74 km) |
| Ostringen to Mealhada | 1,035.54 mi (1,666.54 km) |
| Ostringen to Melgaco | 952.21 mi (1,532.44 km) |
| Ostringen to Melres | 1,002.66 mi (1,613.62 km) |
| Ostringen to Mira | 1,044.40 mi (1,680.80 km) |
| Ostringen to Miranda do Corvo | 1,044.16 mi (1,680.41 km) |
| Ostringen to Mirandela | 935.62 mi (1,505.74 km) |
| Ostringen to Mogadouro | 924.23 mi (1,487.40 km) |
| Ostringen to Moimenta da Beira | 975.42 mi (1,569.78 km) |
| Ostringen to Moita | 1,138.90 mi (1,832.87 km) |
| Ostringen to Moncao | 962.77 mi (1,549.42 km) |
| Ostringen to Montalegre | 945.24 mi (1,521.21 km) |
