| Diamond Bar to Ashtabula (Ohio) | 2,071.84 mi (3,334.31 km) |
| Diamond Bar to Ashwaubenon (Wisconsin) | 1,735.16 mi (2,792.47 km) |
| Diamond Bar to Aspen Hill (Maryland) | 2,269.09 mi (3,651.75 km) |
| Diamond Bar to Astoria (Oregon) | 898.86 mi (1,446.58 km) |
| Diamond Bar to Atascadero (California) | 192.48 mi (309.76 km) |
| Diamond Bar to Atascocita (Texas) | 1,351.46 mi (2,174.96 km) |
| Diamond Bar to Atchison (Kansas) | 1,308.50 mi (2,105.82 km) |
| Diamond Bar to Athens (Alabama) | 1,753.72 mi (2,822.33 km) |
| Diamond Bar to Athens (Georgia) | 1,964.25 mi (3,161.15 km) |
| Diamond Bar to Athens (Ohio) | 2,000.15 mi (3,218.93 km) |
| Diamond Bar to Athens (Tennessee) | 1,879.75 mi (3,025.17 km) |
| Diamond Bar to Athens (Texas) | 1,276.00 mi (2,053.52 km) |
| Diamond Bar to Atlanta (Georgia) | 1,906.97 mi (3,068.98 km) |
| Diamond Bar to Atlantic Beach (Florida) | 2,132.93 mi (3,432.62 km) |
| Diamond Bar to Atlantic City (New Jersey) | 2,407.84 mi (3,875.05 km) |
