| Grass Valley to Ridgeland (Mississippi) | 1,784.34 mi (2,871.63 km) |
| Grass Valley to Ridgewood (New Jersey) | 2,453.55 mi (3,948.61 km) |
| Grass Valley to Rifle (Colorado) | 708.88 mi (1,140.83 km) |
| Grass Valley to Rincon (Georgia) | 2,264.31 mi (3,644.05 km) |
| Grass Valley to Ringwood (New Jersey) | 2,443.40 mi (3,932.27 km) |
| Grass Valley to Río Grande (Puerto Rico) | 3,577.02 mi (5,756.65 km) |
| Grass Valley to Rio Grande City (Texas) | 1,559.60 mi (2,509.93 km) |
| Grass Valley to Rio Linda (California) | 42.56 mi (68.49 km) |
| Grass Valley to Rio Rancho (New Mexico) | 833.81 mi (1,341.89 km) |
| Grass Valley to Rio Rico (Arizona) | 777.93 mi (1,251.96 km) |
| Grass Valley to Ripon (California) | 102.49 mi (164.94 km) |
| Grass Valley to River Edge (New Jersey) | 2,458.17 mi (3,956.05 km) |
| Grass Valley to River Falls (Wisconsin) | 1,501.25 mi (2,416.03 km) |
| Grass Valley to River Forest (Illinois) | 1,743.24 mi (2,805.47 km) |
| Grass Valley to River Grove (Illinois) | 1,742.11 mi (2,803.65 km) |
