| Difficult Run to Ratingen | 3,963.49 mi (6,378.62 km) |
| Difficult Run to Ratzeburg | 4,047.01 mi (6,513.04 km) |
| Difficult Run to Raubling | 4,280.84 mi (6,889.34 km) |
| Difficult Run to Rauenberg | 4,095.86 mi (6,591.65 km) |
| Difficult Run to Raunheim | 4,063.60 mi (6,539.72 km) |
| Difficult Run to Ravensburg | 4,178.27 mi (6,724.28 km) |
| Difficult Run to Recke | 3,968.58 mi (6,386.81 km) |
| Difficult Run to Recklinghausen | 3,968.09 mi (6,386.03 km) |
| Difficult Run to Regen | 4,284.00 mi (6,894.44 km) |
| Difficult Run to Regensburg | 4,240.31 mi (6,824.12 km) |
| Difficult Run to Regenstauf | 4,238.70 mi (6,821.53 km) |
| Difficult Run to Rehau | 4,198.66 mi (6,757.10 km) |
| Difficult Run to Rehburg-Loccum | 4,023.88 mi (6,475.81 km) |
| Difficult Run to Rehlingen-Siersburg | 4,010.15 mi (6,453.71 km) |
| Difficult Run to Reichelsheim | 4,088.15 mi (6,579.24 km) |
