| Fort Collins to Ratingen | 4,886.99 mi (7,864.84 km) |
| Fort Collins to Ratzeburg | 4,895.36 mi (7,878.31 km) |
| Fort Collins to Raubling | 5,224.79 mi (8,408.48 km) |
| Fort Collins to Rauenberg | 5,042.19 mi (8,114.61 km) |
| Fort Collins to Raunheim | 4,998.51 mi (8,044.32 km) |
| Fort Collins to Ravensburg | 5,143.15 mi (8,277.10 km) |
| Fort Collins to Recke | 4,865.33 mi (7,829.99 km) |
| Fort Collins to Recklinghausen | 4,883.89 mi (7,859.87 km) |
| Fort Collins to Regen | 5,199.07 mi (8,367.09 km) |
| Fort Collins to Regensburg | 5,163.43 mi (8,309.73 km) |
| Fort Collins to Regenstauf | 5,159.59 mi (8,303.55 km) |
| Fort Collins to Rehau | 5,100.70 mi (8,208.78 km) |
| Fort Collins to Rehburg-Loccum | 4,907.88 mi (7,898.47 km) |
| Fort Collins to Rehlingen-Siersburg | 4,970.44 mi (7,999.15 km) |
| Fort Collins to Reichelsheim | 5,025.43 mi (8,087.64 km) |
