| Troisdorf to Ratingen | 35.97 mi (57.89 km) |
| Troisdorf to Ratzeburg | 250.56 mi (403.23 km) |
| Troisdorf to Raubling | 305.63 mi (491.87 km) |
| Troisdorf to Rauenberg | 127.13 mi (204.59 km) |
| Troisdorf to Raunheim | 79.36 mi (127.72 km) |
| Troisdorf to Ravensburg | 236.95 mi (381.33 km) |
| Troisdorf to Recke | 110.05 mi (177.11 km) |
| Troisdorf to Recklinghausen | 53.13 mi (85.50 km) |
| Troisdorf to Regen | 295.06 mi (474.85 km) |
| Troisdorf to Regensburg | 251.95 mi (405.48 km) |
| Troisdorf to Regenstauf | 249.95 mi (402.25 km) |
| Troisdorf to Rehau | 217.00 mi (349.23 km) |
| Troisdorf to Rehburg-Loccum | 143.18 mi (230.42 km) |
| Troisdorf to Rehlingen-Siersburg | 102.22 mi (164.51 km) |
| Troisdorf to Reichelsheim | 106.39 mi (171.22 km) |
