| Diamond Bar to Hazleton (Pennsylvania) | 2,321.26 mi (3,735.71 km) |
| Diamond Bar to Healdsburg (California) | 425.36 mi (684.55 km) |
| Diamond Bar to Heath (Ohio) | 1,981.96 mi (3,189.65 km) |
| Diamond Bar to Heber (Utah) | 571.25 mi (919.35 km) |
| Diamond Bar to Helena (Alabama) | 1,773.44 mi (2,854.08 km) |
| Diamond Bar to Helena (Montana) | 921.76 mi (1,483.43 km) |
| Diamond Bar to Hemet (California) | 50.44 mi (81.18 km) |
| Diamond Bar to Henderson (Kentucky) | 1,704.94 mi (2,743.84 km) |
| Diamond Bar to Henderson (Nevada) | 209.94 mi (337.87 km) |
| Diamond Bar to Henderson (North Carolina) | 2,216.05 mi (3,566.38 km) |
| Diamond Bar to Henderson (Texas) | 1,335.99 mi (2,150.07 km) |
| Diamond Bar to Hendersonville (North Carolina) | 2,000.87 mi (3,220.10 km) |
| Diamond Bar to Hendersonville (Tennessee) | 1,763.03 mi (2,837.33 km) |
| Diamond Bar to Hercules (California) | 371.73 mi (598.24 km) |
| Diamond Bar to Hereford (Texas) | 879.72 mi (1,415.78 km) |
