| Prospect Heights to Ratingen | 4,215.50 mi (6,784.19 km) |
| Prospect Heights to Ratzeburg | 4,263.03 mi (6,860.68 km) |
| Prospect Heights to Raubling | 4,547.01 mi (7,317.70 km) |
| Prospect Heights to Rauenberg | 4,360.97 mi (7,018.31 km) |
| Prospect Heights to Raunheim | 4,322.60 mi (6,956.55 km) |
| Prospect Heights to Ravensburg | 4,453.67 mi (7,167.49 km) |
| Prospect Heights to Recke | 4,207.33 mi (6,771.05 km) |
| Prospect Heights to Recklinghausen | 4,216.32 mi (6,785.51 km) |
| Prospect Heights to Regen | 4,535.93 mi (7,299.87 km) |
| Prospect Heights to Regensburg | 4,495.66 mi (7,235.07 km) |
| Prospect Heights to Regenstauf | 4,492.93 mi (7,230.67 km) |
| Prospect Heights to Rehau | 4,443.09 mi (7,150.46 km) |
| Prospect Heights to Rehburg-Loccum | 4,257.08 mi (6,851.11 km) |
| Prospect Heights to Rehlingen-Siersburg | 4,281.22 mi (6,889.96 km) |
| Prospect Heights to Reichelsheim | 4,348.64 mi (6,998.47 km) |
