| Osterwieck to Marco de Canavezes | 1,159.27 mi (1,865.67 km) |
| Osterwieck to Marinha Grande | 1,260.08 mi (2,027.90 km) |
| Osterwieck to Massama | 1,324.03 mi (2,130.82 km) |
| Osterwieck to Matosinhos | 1,179.12 mi (1,897.61 km) |
| Osterwieck to Mealhada | 1,210.43 mi (1,948.00 km) |
| Osterwieck to Melgaco | 1,117.76 mi (1,798.87 km) |
| Osterwieck to Melres | 1,174.08 mi (1,889.50 km) |
| Osterwieck to Mira | 1,217.94 mi (1,960.09 km) |
| Osterwieck to Miranda do Corvo | 1,220.91 mi (1,964.86 km) |
| Osterwieck to Mirandela | 1,109.58 mi (1,785.70 km) |
| Osterwieck to Mogadouro | 1,100.95 mi (1,771.81 km) |
| Osterwieck to Moimenta da Beira | 1,150.45 mi (1,851.48 km) |
| Osterwieck to Moita | 1,319.68 mi (2,123.82 km) |
| Osterwieck to Moncao | 1,127.72 mi (1,814.89 km) |
| Osterwieck to Montalegre | 1,114.65 mi (1,793.85 km) |
