| Radolfzell am Bodensee to Grevena | 813.08 mi (1,308.52 km) |
| Radolfzell am Bodensee to Ialysos | 1,250.74 mi (2,012.87 km) |
| Radolfzell am Bodensee to Ilion | 999.68 mi (1,608.83 km) |
| Radolfzell am Bodensee to Ilioupoli | 1,006.58 mi (1,619.94 km) |
| Radolfzell am Bodensee to Ioannina | 812.77 mi (1,308.03 km) |
| Radolfzell am Bodensee to Irakleio | 1,192.13 mi (1,918.54 km) |
| Radolfzell am Bodensee to Irakleio | 1,001.33 mi (1,611.48 km) |
| Radolfzell am Bodensee to Kaisariani | 1,005.13 mi (1,617.59 km) |
| Radolfzell am Bodensee to Kalamaria | 849.08 mi (1,366.47 km) |
| Radolfzell am Bodensee to Kalamata | 995.29 mi (1,601.77 km) |
| Radolfzell am Bodensee to Kallithea | 1,003.88 mi (1,615.59 km) |
| Radolfzell am Bodensee to Kalymnos | 1,177.01 mi (1,894.21 km) |
| Radolfzell am Bodensee to Kalyvia Thorikou | 1,017.84 mi (1,638.05 km) |
| Radolfzell am Bodensee to Kamatero | 998.80 mi (1,607.41 km) |
| Radolfzell am Bodensee to Karditsa | 866.66 mi (1,394.75 km) |
