| Buffalo Grove to Ratingen | 4,213.68 mi (6,781.27 km) |
| Buffalo Grove to Ratzeburg | 4,260.93 mi (6,857.31 km) |
| Buffalo Grove to Raubling | 4,545.28 mi (7,314.91 km) |
| Buffalo Grove to Rauenberg | 4,359.25 mi (7,015.54 km) |
| Buffalo Grove to Raunheim | 4,320.83 mi (6,953.71 km) |
| Buffalo Grove to Ravensburg | 4,452.03 mi (7,164.84 km) |
| Buffalo Grove to Recke | 4,205.41 mi (6,767.96 km) |
| Buffalo Grove to Recklinghausen | 4,214.47 mi (6,782.54 km) |
| Buffalo Grove to Regen | 4,534.08 mi (7,296.90 km) |
| Buffalo Grove to Regensburg | 4,493.85 mi (7,232.15 km) |
| Buffalo Grove to Regenstauf | 4,491.11 mi (7,227.74 km) |
| Buffalo Grove to Rehau | 4,441.19 mi (7,147.41 km) |
| Buffalo Grove to Rehburg-Loccum | 4,255.12 mi (6,847.95 km) |
| Buffalo Grove to Rehlingen-Siersburg | 4,279.56 mi (6,887.28 km) |
| Buffalo Grove to Reichelsheim | 4,346.89 mi (6,995.64 km) |
