| Diamond Bar to Lomita (California) | 32.08 mi (51.63 km) |
| Diamond Bar to Lompoc (California) | 158.26 mi (254.70 km) |
| Diamond Bar to London (Ohio) | 1,929.05 mi (3,104.51 km) |
| Diamond Bar to Lone Tree (Colorado) | 810.94 mi (1,305.09 km) |
| Diamond Bar to Long Beach (California) | 24.47 mi (39.38 km) |
| Diamond Bar to Long Beach (Mississippi) | 1,688.65 mi (2,717.61 km) |
| Diamond Bar to Long Beach (New York) | 2,443.02 mi (3,931.66 km) |
| Diamond Bar to Long Branch (New Jersey) | 2,427.29 mi (3,906.35 km) |
| Diamond Bar to Longmont (Colorado) | 819.09 mi (1,318.19 km) |
| Diamond Bar to Longview (Texas) | 1,333.06 mi (2,145.36 km) |
| Diamond Bar to Longview (Washington) | 881.78 mi (1,419.09 km) |
| Diamond Bar to Longwood (Florida) | 2,171.12 mi (3,494.07 km) |
| Diamond Bar to Lorain (Ohio) | 1,998.80 mi (3,216.76 km) |
| Diamond Bar to Lorton (Virginia) | 2,263.95 mi (3,643.47 km) |
| Diamond Bar to Los Alamitos (California) | 19.73 mi (31.76 km) |
