| Rockford to Ratingen | 4,249.26 mi (6,838.53 km) |
| Rockford to Ratzeburg | 4,293.53 mi (6,909.77 km) |
| Rockford to Raubling | 4,581.64 mi (7,373.44 km) |
| Rockford to Rauenberg | 4,395.73 mi (7,074.24 km) |
| Rockford to Raunheim | 4,356.86 mi (7,011.68 km) |
| Rockford to Ravensburg | 4,489.23 mi (7,224.71 km) |
| Rockford to Recke | 4,239.94 mi (6,823.52 km) |
| Rockford to Recklinghausen | 4,249.75 mi (6,839.31 km) |
| Rockford to Regen | 4,569.31 mi (7,353.60 km) |
| Rockford to Regensburg | 4,529.40 mi (7,289.36 km) |
| Rockford to Regenstauf | 4,526.57 mi (7,284.81 km) |
| Rockford to Rehau | 4,475.91 mi (7,203.29 km) |
| Rockford to Rehburg-Loccum | 4,289.13 mi (6,902.69 km) |
| Rockford to Rehlingen-Siersburg | 4,316.59 mi (6,946.88 km) |
| Rockford to Reichelsheim | 4,383.00 mi (7,053.76 km) |
