| Darby to Ridgeland (Mississippi) | 976.67 mi (1,571.79 km) |
| Darby to Ridgewood (New Jersey) | 94.97 mi (152.84 km) |
| Darby to Rifle (Colorado) | 1,718.19 mi (2,765.16 km) |
| Darby to Rincon (Georgia) | 623.22 mi (1,002.98 km) |
| Darby to Ringwood (New Jersey) | 96.91 mi (155.97 km) |
| Darby to Río Grande (Puerto Rico) | 1,590.93 mi (2,560.35 km) |
| Darby to Rio Grande City (Texas) | 1,644.70 mi (2,646.89 km) |
| Darby to Rio Linda (California) | 2,442.55 mi (3,930.90 km) |
| Darby to Rio Rancho (New Mexico) | 1,741.03 mi (2,801.92 km) |
| Darby to Rio Rico (Arizona) | 2,071.91 mi (3,334.42 km) |
| Darby to Ripon (California) | 2,446.20 mi (3,936.78 km) |
| Darby to River Edge (New Jersey) | 94.67 mi (152.36 km) |
| Darby to River Falls (Wisconsin) | 947.19 mi (1,524.35 km) |
| Darby to River Forest (Illinois) | 669.15 mi (1,076.90 km) |
| Darby to River Grove (Illinois) | 670.37 mi (1,078.85 km) |
