| Diamond Bar to Camarillo (California) | 71.26 mi (114.68 km) |
| Diamond Bar to Camas (Washington) | 837.78 mi (1,348.27 km) |
| Diamond Bar to Cambridge (Maryland) | 2,326.01 mi (3,743.35 km) |
| Diamond Bar to Cambridge (Massachusetts) | 2,567.65 mi (4,132.23 km) |
| Diamond Bar to Camden (Arkansas) | 1,430.66 mi (2,302.43 km) |
| Diamond Bar to Camden (New Jersey) | 2,370.16 mi (3,814.41 km) |
| Diamond Bar to Cameron Park (California) | 368.00 mi (592.23 km) |
| Diamond Bar to Camp Pendleton South (California) | 58.27 mi (93.78 km) |
| Diamond Bar to Camp Springs (Maryland) | 2,279.29 mi (3,668.16 km) |
| Diamond Bar to Camp Verde (Arizona) | 342.47 mi (551.16 km) |
| Diamond Bar to Campbell (California) | 324.55 mi (522.31 km) |
| Diamond Bar to Campbellsville (Kentucky) | 1,827.79 mi (2,941.55 km) |
| Diamond Bar to Campton Hills (Illinois) | 1,683.01 mi (2,708.54 km) |
| Diamond Bar to Canby (Oregon) | 820.00 mi (1,319.67 km) |
| Diamond Bar to Candelaria (Puerto Rico) | 3,337.47 mi (5,371.14 km) |
