| Diamond Bar to Anoka (Minnesota) | 1,504.60 mi (2,421.42 km) |
| Diamond Bar to Ansonia (Connecticut) | 2,471.05 mi (3,976.76 km) |
| Diamond Bar to Antelope (California) | 380.82 mi (612.87 km) |
| Diamond Bar to Anthem (Arizona) | 326.85 mi (526.01 km) |
| Diamond Bar to Antioch (California) | 353.62 mi (569.10 km) |
| Diamond Bar to Antioch (Illinois) | 1,706.52 mi (2,746.38 km) |
| Diamond Bar to Apache Junction (Arizona) | 363.38 mi (584.80 km) |
| Diamond Bar to Apex (North Carolina) | 2,196.48 mi (3,534.89 km) |
| Diamond Bar to Apollo Beach (Florida) | 2,132.88 mi (3,432.53 km) |
| Diamond Bar to Apopka (Florida) | 2,160.64 mi (3,477.21 km) |
| Diamond Bar to Apple Valley (California) | 50.65 mi (81.52 km) |
| Diamond Bar to Apple Valley (Minnesota) | 1,501.27 mi (2,416.06 km) |
| Diamond Bar to Appleton (Wisconsin) | 1,717.34 mi (2,763.80 km) |
| Diamond Bar to Arbutus (Maryland) | 2,289.23 mi (3,684.17 km) |
| Diamond Bar to Arcadia (California) | 15.73 mi (25.31 km) |
