| Wheat Ridge to Ratingen | 4,930.48 mi (7,934.84 km) |
| Wheat Ridge to Ratzeburg | 4,940.71 mi (7,951.31 km) |
| Wheat Ridge to Raubling | 5,268.17 mi (8,478.30 km) |
| Wheat Ridge to Rauenberg | 5,085.27 mi (8,183.96 km) |
| Wheat Ridge to Raunheim | 5,041.84 mi (8,114.07 km) |
| Wheat Ridge to Ravensburg | 5,185.85 mi (8,345.83 km) |
| Wheat Ridge to Recke | 4,909.48 mi (7,901.05 km) |
| Wheat Ridge to Recklinghausen | 4,927.59 mi (7,930.19 km) |
| Wheat Ridge to Regen | 5,243.18 mi (8,438.09 km) |
| Wheat Ridge to Regensburg | 5,207.29 mi (8,380.32 km) |
| Wheat Ridge to Regenstauf | 5,203.50 mi (8,374.22 km) |
| Wheat Ridge to Rehau | 5,145.02 mi (8,280.11 km) |
| Wheat Ridge to Rehburg-Loccum | 4,952.40 mi (7,970.12 km) |
| Wheat Ridge to Rehlingen-Siersburg | 5,013.05 mi (8,067.72 km) |
| Wheat Ridge to Reichelsheim | 5,068.74 mi (8,157.34 km) |
