| Grass Valley to Cibolo (Texas) | 1,457.54 mi (2,345.68 km) |
| Grass Valley to Cicero (Illinois) | 1,746.63 mi (2,810.93 km) |
| Grass Valley to Cimarron Hills (Colorado) | 876.72 mi (1,410.94 km) |
| Grass Valley to Cincinnati (Ohio) | 1,943.76 mi (3,128.18 km) |
| Grass Valley to Cinco Ranch (Texas) | 1,575.41 mi (2,535.38 km) |
| Grass Valley to Circleville (Ohio) | 2,019.41 mi (3,249.93 km) |
| Grass Valley to Citrus (California) | 393.98 mi (634.05 km) |
| Grass Valley to Citrus Heights (California) | 38.68 mi (62.26 km) |
| Grass Valley to Citrus Park (Florida) | 2,323.80 mi (3,739.80 km) |
| Grass Valley to Claiborne (Louisiana) | 1,672.06 mi (2,690.92 km) |
| Grass Valley to Claremont (California) | 397.74 mi (640.10 km) |
| Grass Valley to Claremont (New Hampshire) | 2,508.82 mi (4,037.56 km) |
| Grass Valley to Claremore (Oklahoma) | 1,399.37 mi (2,252.06 km) |
| Grass Valley to Clarksburg (Maryland) | 2,320.11 mi (3,733.85 km) |
| Grass Valley to Clarksburg (West Virginia) | 2,160.18 mi (3,476.47 km) |
