| Grass Valley to Romeoville (Illinois) | 1,730.54 mi (2,785.03 km) |
| Grass Valley to Romulus (Michigan) | 1,968.10 mi (3,167.35 km) |
| Grass Valley to Ronkonkoma (New York) | 2,506.61 mi (4,034.00 km) |
| Grass Valley to Roosevelt (New York) | 2,485.27 mi (3,999.65 km) |
| Grass Valley to Rosamond (California) | 339.27 mi (546.01 km) |
| Grass Valley to Rosaryville (Maryland) | 2,350.93 mi (3,783.46 km) |
| Grass Valley to Roscoe (Illinois) | 1,679.81 mi (2,703.39 km) |
| Grass Valley to Rose Hill (Virginia) | 2,335.90 mi (3,759.28 km) |
| Grass Valley to Roseburg (Oregon) | 301.03 mi (484.46 km) |
| Grass Valley to Rosedale (California) | 283.73 mi (456.62 km) |
| Grass Valley to Rosedale (Maryland) | 2,357.62 mi (3,794.23 km) |
| Grass Valley to Roselle (Illinois) | 1,729.07 mi (2,782.66 km) |
| Grass Valley to Roselle (New Jersey) | 2,451.24 mi (3,944.90 km) |
| Grass Valley to Roselle Park (New Jersey) | 2,450.70 mi (3,944.02 km) |
| Grass Valley to Rosemead (California) | 392.32 mi (631.37 km) |
