| Grass Valley to Cadillac (Michigan) | 1,854.72 mi (2,984.89 km) |
| Grass Valley to Caguas (Puerto Rico) | 3,572.36 mi (5,749.16 km) |
| Grass Valley to Cahokia (Illinois) | 1,652.76 mi (2,659.86 km) |
| Grass Valley to Calabasas (California) | 375.38 mi (604.12 km) |
| Grass Valley to Caldwell (Idaho) | 380.80 mi (612.84 km) |
| Grass Valley to Caledonia (Wisconsin) | 1,735.83 mi (2,793.55 km) |
| Grass Valley to Calera (Alabama) | 1,947.03 mi (3,133.44 km) |
| Grass Valley to Calexico (California) | 548.13 mi (882.13 km) |
| Grass Valley to Calhoun (Georgia) | 2,009.56 mi (3,234.08 km) |
| Grass Valley to California (Maryland) | 2,376.87 mi (3,825.20 km) |
| Grass Valley to California City (California) | 330.94 mi (532.60 km) |
| Grass Valley to Callaway (Florida) | 2,097.12 mi (3,375.00 km) |
| Grass Valley to Calumet City (Illinois) | 1,758.89 mi (2,830.66 km) |
| Grass Valley to Calverton (Maryland) | 2,339.44 mi (3,764.96 km) |
| Grass Valley to Camano (Washington) | 623.27 mi (1,003.06 km) |
