| Diamond Bar to Candler-McAfee (Georgia) | 1,915.88 mi (3,083.30 km) |
| Diamond Bar to Caño Martin Peña (Puerto Rico) | 3,346.08 mi (5,385.00 km) |
| Diamond Bar to Cañon City (Colorado) | 765.42 mi (1,231.83 km) |
| Diamond Bar to Canóvanas (Puerto Rico) | 3,356.72 mi (5,402.13 km) |
| Diamond Bar to Canton (Georgia) | 1,897.63 mi (3,053.94 km) |
| Diamond Bar to Canton (Illinois) | 1,585.35 mi (2,551.38 km) |
| Diamond Bar to Canton (Mississippi) | 1,602.57 mi (2,579.08 km) |
| Diamond Bar to Canton (Ohio) | 2,039.49 mi (3,282.25 km) |
| Diamond Bar to Canyon (Texas) | 906.89 mi (1,459.50 km) |
| Diamond Bar to Canyon Lake (California) | 38.36 mi (61.74 km) |
| Diamond Bar to Canyon Lake (Texas) | 1,179.41 mi (1,898.07 km) |
| Diamond Bar to Cape Coral (Florida) | 2,184.20 mi (3,515.12 km) |
| Diamond Bar to Cape Girardeau (Missouri) | 1,596.72 mi (2,569.67 km) |
| Diamond Bar to Carbondale (Illinois) | 1,615.16 mi (2,599.36 km) |
| Diamond Bar to Carlisle (Pennsylvania) | 2,258.52 mi (3,634.74 km) |
