| Radolfzell am Bodensee to Marco de Canavezes | 954.85 mi (1,536.68 km) |
| Radolfzell am Bodensee to Marinha Grande | 1,046.27 mi (1,683.81 km) |
| Radolfzell am Bodensee to Massama | 1,103.58 mi (1,776.04 km) |
| Radolfzell am Bodensee to Matosinhos | 978.63 mi (1,574.95 km) |
| Radolfzell am Bodensee to Mealhada | 999.52 mi (1,608.58 km) |
| Radolfzell am Bodensee to Melgaco | 925.42 mi (1,489.32 km) |
| Radolfzell am Bodensee to Melres | 970.14 mi (1,561.29 km) |
| Radolfzell am Bodensee to Mira | 1,009.54 mi (1,624.69 km) |
| Radolfzell am Bodensee to Miranda do Corvo | 1,006.33 mi (1,619.52 km) |
| Radolfzell am Bodensee to Mirandela | 901.54 mi (1,450.89 km) |
| Radolfzell am Bodensee to Mogadouro | 887.67 mi (1,428.57 km) |
| Radolfzell am Bodensee to Moimenta da Beira | 939.88 mi (1,512.58 km) |
| Radolfzell am Bodensee to Moita | 1,096.39 mi (1,764.47 km) |
| Radolfzell am Bodensee to Moncao | 936.36 mi (1,506.92 km) |
| Radolfzell am Bodensee to Montalegre | 915.17 mi (1,472.83 km) |
