| Diamond Bar to Arcata (California) | 585.09 mi (941.61 km) |
| Diamond Bar to Archdale (North Carolina) | 2,134.56 mi (3,435.24 km) |
| Diamond Bar to Arden-Arcade (California) | 374.90 mi (603.34 km) |
| Diamond Bar to Ardmore (Oklahoma) | 1,181.85 mi (1,902.01 km) |
| Diamond Bar to Ardmore (Pennsylvania) | 2,359.96 mi (3,797.99 km) |
| Diamond Bar to Arecibo (Puerto Rico) | 3,306.22 mi (5,320.85 km) |
| Diamond Bar to Arkadelphia (Arkansas) | 1,412.81 mi (2,273.69 km) |
| Diamond Bar to Arkansas City (Kansas) | 1,184.86 mi (1,906.85 km) |
| Diamond Bar to Arlington (Tennessee) | 1,597.33 mi (2,570.65 km) |
| Diamond Bar to Arlington (Texas) | 1,195.54 mi (1,924.04 km) |
| Diamond Bar to Arlington (Virginia) | 2,269.18 mi (3,651.89 km) |
| Diamond Bar to Arlington (Washington) | 1,004.29 mi (1,616.26 km) |
| Diamond Bar to Arlington Heights (Illinois) | 1,706.62 mi (2,746.54 km) |
| Diamond Bar to Arnold (Maryland) | 2,300.65 mi (3,702.54 km) |
| Diamond Bar to Arnold (Missouri) | 1,554.08 mi (2,501.05 km) |
