| Castel Bolognese to Ratingen | 534.08 mi (859.52 km) |
| Castel Bolognese to Ratzeburg | 650.05 mi (1,046.15 km) |
| Castel Bolognese to Raubling | 240.29 mi (386.72 km) |
| Castel Bolognese to Rauenberg | 372.04 mi (598.75 km) |
| Castel Bolognese to Raunheim | 423.99 mi (682.35 km) |
| Castel Bolognese to Ravensburg | 261.46 mi (420.78 km) |
| Castel Bolognese to Recke | 586.90 mi (944.53 km) |
| Castel Bolognese to Recklinghausen | 545.86 mi (878.47 km) |
| Castel Bolognese to Regen | 327.44 mi (526.96 km) |
| Castel Bolognese to Regensburg | 325.02 mi (523.06 km) |
| Castel Bolognese to Regenstauf | 332.49 mi (535.09 km) |
| Castel Bolognese to Rehau | 410.08 mi (659.95 km) |
| Castel Bolognese to Rehburg-Loccum | 574.36 mi (924.34 km) |
| Castel Bolognese to Rehlingen-Siersburg | 424.54 mi (683.23 km) |
| Castel Bolognese to Reichelsheim | 398.12 mi (640.70 km) |
