| Grass Valley to Robertsville (New Jersey) | 2,454.59 mi (3,950.28 km) |
| Grass Valley to Robinson (Texas) | 1,446.40 mi (2,327.76 km) |
| Grass Valley to Robstown (Texas) | 1,554.54 mi (2,501.78 km) |
| Grass Valley to Rochester (Michigan) | 1,977.00 mi (3,181.67 km) |
| Grass Valley to Rochester (Minnesota) | 1,504.51 mi (2,421.27 km) |
| Grass Valley to Rochester (New Hampshire) | 2,576.87 mi (4,147.08 km) |
| Grass Valley to Rochester (New York) | 2,249.16 mi (3,619.68 km) |
| Grass Valley to Rochester Hills (Michigan) | 1,975.31 mi (3,178.96 km) |
| Grass Valley to Rock Hill (South Carolina) | 2,208.07 mi (3,553.55 km) |
| Grass Valley to Rock Island (Illinois) | 1,603.64 mi (2,580.81 km) |
| Grass Valley to Rock Springs (Wyoming) | 643.05 mi (1,034.89 km) |
| Grass Valley to Rockford (Illinois) | 1,677.67 mi (2,699.95 km) |
| Grass Valley to Rockledge (Florida) | 2,412.60 mi (3,882.71 km) |
| Grass Valley to Rocklin (California) | 30.64 mi (49.31 km) |
| Grass Valley to Rockport (Texas) | 1,574.43 mi (2,533.81 km) |
