| Radolfzell am Bodensee to Ramnicu Sarat | 872.76 mi (1,404.57 km) |
| Radolfzell am Bodensee to Ramnicu Valcea | 754.69 mi (1,214.55 km) |
| Radolfzell am Bodensee to Rasnov | 794.34 mi (1,278.36 km) |
| Radolfzell am Bodensee to Reghin | 739.90 mi (1,190.75 km) |
| Radolfzell am Bodensee to Resita | 636.13 mi (1,023.75 km) |
| Radolfzell am Bodensee to Roman | 841.12 mi (1,353.65 km) |
| Radolfzell am Bodensee to Rosiori de Vede | 808.22 mi (1,300.70 km) |
| Radolfzell am Bodensee to Rovinari | 703.67 mi (1,132.45 km) |
| Radolfzell am Bodensee to Roznov | 822.90 mi (1,324.33 km) |
| Radolfzell am Bodensee to Sabaoani | 836.35 mi (1,345.98 km) |
| Radolfzell am Bodensee to Sacele | 805.37 mi (1,296.11 km) |
| Radolfzell am Bodensee to Sacueni | 611.97 mi (984.88 km) |
| Radolfzell am Bodensee to Salcea | 807.71 mi (1,299.88 km) |
| Radolfzell am Bodensee to Salonta | 597.47 mi (961.54 km) |
| Radolfzell am Bodensee to Sangeorgiu de Mures | 731.77 mi (1,177.67 km) |
