| Naperville to Ratingen | 4,241.53 mi (6,826.09 km) |
| Naperville to Ratzeburg | 4,289.59 mi (6,903.42 km) |
| Naperville to Raubling | 4,572.87 mi (7,359.33 km) |
| Naperville to Rauenberg | 4,386.82 mi (7,059.91 km) |
| Naperville to Raunheim | 4,348.54 mi (6,998.30 km) |
| Naperville to Ravensburg | 4,479.36 mi (7,208.83 km) |
| Naperville to Recke | 4,233.57 mi (6,813.27 km) |
| Naperville to Recklinghausen | 4,242.41 mi (6,827.50 km) |
| Naperville to Regen | 4,562.02 mi (7,341.87 km) |
| Naperville to Regensburg | 4,521.70 mi (7,276.97 km) |
| Naperville to Regenstauf | 4,518.98 mi (7,272.60 km) |
| Naperville to Rehau | 4,469.29 mi (7,192.62 km) |
| Naperville to Rehburg-Loccum | 4,283.41 mi (6,893.48 km) |
| Naperville to Rehlingen-Siersburg | 4,306.95 mi (6,931.36 km) |
| Naperville to Reichelsheim | 4,374.57 mi (7,040.19 km) |
