| Diamond Bar to Altus (Oklahoma) | 1,055.65 mi (1,698.91 km) |
| Diamond Bar to Alum Rock (California) | 323.67 mi (520.90 km) |
| Diamond Bar to Alvin (Texas) | 1,358.82 mi (2,186.81 km) |
| Diamond Bar to Amarillo (Texas) | 911.88 mi (1,467.53 km) |
| Diamond Bar to Amelia (Ohio) | 1,886.55 mi (3,036.11 km) |
| Diamond Bar to American Canyon (California) | 380.61 mi (612.53 km) |
| Diamond Bar to American Fork (Utah) | 551.13 mi (886.96 km) |
| Diamond Bar to Americus (Georgia) | 1,941.57 mi (3,124.66 km) |
| Diamond Bar to Ames (Iowa) | 1,422.78 mi (2,289.75 km) |
| Diamond Bar to Amherst (Ohio) | 1,996.26 mi (3,212.67 km) |
| Diamond Bar to Ammon (Idaho) | 726.38 mi (1,168.99 km) |
| Diamond Bar to Amsterdam (New York) | 2,410.62 mi (3,879.52 km) |
| Diamond Bar to Anacortes (Washington) | 1,031.28 mi (1,659.68 km) |
| Diamond Bar to Anaheim (California) | 11.32 mi (18.22 km) |
| Diamond Bar to Anchorage (Alaska) | 2,330.91 mi (3,751.24 km) |
