| Diamond Bar to Central Point (Oregon) | 641.22 mi (1,031.95 km) |
| Diamond Bar to Centralia (Illinois) | 1,621.91 mi (2,610.22 km) |
| Diamond Bar to Centralia (Washington) | 919.47 mi (1,479.74 km) |
| Diamond Bar to Centreville (Virginia) | 2,251.26 mi (3,623.05 km) |
| Diamond Bar to Ceres (California) | 304.61 mi (490.22 km) |
| Diamond Bar to Cerritos (California) | 17.09 mi (27.50 km) |
| Diamond Bar to Chalco (Nebraska) | 1,282.11 mi (2,063.36 km) |
| Diamond Bar to Chalmette (Louisiana) | 1,651.00 mi (2,657.02 km) |
| Diamond Bar to Chambersburg (Pennsylvania) | 2,235.37 mi (3,597.49 km) |
| Diamond Bar to Chamblee (Georgia) | 1,912.39 mi (3,077.70 km) |
| Diamond Bar to Champaign (Illinois) | 1,674.36 mi (2,694.62 km) |
| Diamond Bar to Champlin (Minnesota) | 1,503.51 mi (2,419.67 km) |
| Diamond Bar to Chandler (Arizona) | 346.60 mi (557.81 km) |
| Diamond Bar to Chanhassen (Minnesota) | 1,487.53 mi (2,393.94 km) |
| Diamond Bar to Channahon (Illinois) | 1,685.48 mi (2,712.52 km) |
