| Diamond Bar to Clarksdale (Mississippi) | 1,554.32 mi (2,501.44 km) |
| Diamond Bar to Clarkston (Georgia) | 1,916.67 mi (3,084.58 km) |
| Diamond Bar to Clarksville (Indiana) | 1,803.32 mi (2,902.16 km) |
| Diamond Bar to Clarksville (Tennessee) | 1,720.74 mi (2,769.26 km) |
| Diamond Bar to Clawson (Michigan) | 1,955.33 mi (3,146.80 km) |
| Diamond Bar to Clay (Alabama) | 1,783.90 mi (2,870.91 km) |
| Diamond Bar to Clayton (California) | 356.39 mi (573.56 km) |
| Diamond Bar to Clayton (Missouri) | 1,557.21 mi (2,506.08 km) |
| Diamond Bar to Clayton (North Carolina) | 2,220.70 mi (3,573.87 km) |
| Diamond Bar to Clayton (Ohio) | 1,881.74 mi (3,028.38 km) |
| Diamond Bar to Clearfield (Utah) | 584.12 mi (940.04 km) |
| Diamond Bar to Clearlake (California) | 434.64 mi (699.49 km) |
| Diamond Bar to Clearwater (Florida) | 2,106.92 mi (3,390.77 km) |
| Diamond Bar to Cleburne (Texas) | 1,183.26 mi (1,904.27 km) |
| Diamond Bar to Clemmons (North Carolina) | 2,109.72 mi (3,395.26 km) |
