| Flensburg to Ratzeburg | 91.65 mi (147.49 km) |
| Flensburg to Raubling | 496.69 mi (799.35 km) |
| Flensburg to Rauenberg | 382.25 mi (615.18 km) |
| Flensburg to Raunheim | 331.85 mi (534.06 km) |
| Flensburg to Ravensburg | 483.63 mi (778.33 km) |
| Flensburg to Recke | 180.92 mi (291.16 km) |
| Flensburg to Recklinghausen | 240.10 mi (386.40 km) |
| Flensburg to Regen | 431.48 mi (694.39 km) |
| Flensburg to Regensburg | 413.93 mi (666.16 km) |
| Flensburg to Regenstauf | 407.33 mi (655.53 km) |
| Flensburg to Rehau | 331.32 mi (533.21 km) |
| Flensburg to Rehburg-Loccum | 161.34 mi (259.65 km) |
| Flensburg to Rehlingen-Siersburg | 391.85 mi (630.63 km) |
| Flensburg to Reichelsheim | 351.00 mi (564.88 km) |
| Flensburg to Reichenbach/Vogtland | 311.69 mi (501.62 km) |
