| Grass Valley to Castle Pines (Colorado) | 863.65 mi (1,389.90 km) |
| Grass Valley to Castle Rock (Colorado) | 865.00 mi (1,392.08 km) |
| Grass Valley to Castro Valley (California) | 118.09 mi (190.04 km) |
| Grass Valley to Catalina Foothills (Arizona) | 743.13 mi (1,195.96 km) |
| Grass Valley to Cataño (Puerto Rico) | 3,558.44 mi (5,726.75 km) |
| Grass Valley to Cathedral City (California) | 450.90 mi (725.66 km) |
| Grass Valley to Catonsville (Maryland) | 2,346.57 mi (3,776.43 km) |
| Grass Valley to Cave Spring (Virginia) | 2,213.09 mi (3,561.62 km) |
| Grass Valley to Cayce (South Carolina) | 2,231.12 mi (3,590.64 km) |
| Grass Valley to Cayey (Puerto Rico) | 3,570.53 mi (5,746.21 km) |
| Grass Valley to Cedar City (Utah) | 443.31 mi (713.44 km) |
| Grass Valley to Cedar Falls (Iowa) | 1,504.12 mi (2,420.65 km) |
| Grass Valley to Cedar Hill (Texas) | 1,419.27 mi (2,284.09 km) |
| Grass Valley to Cedar Lake (Indiana) | 1,766.43 mi (2,842.80 km) |
| Grass Valley to Cedar Mill (Oregon) | 445.10 mi (716.32 km) |
