| Diamond Bar to Los Alamos (New Mexico) | 665.55 mi (1,071.10 km) |
| Diamond Bar to Los Altos (California) | 334.43 mi (538.22 km) |
| Diamond Bar to Los Angeles (California) | 34.73 mi (55.90 km) |
| Diamond Bar to Los Banos (California) | 271.50 mi (436.94 km) |
| Diamond Bar to Los Gatos (California) | 322.30 mi (518.69 km) |
| Diamond Bar to Los Lunas (New Mexico) | 631.28 mi (1,015.95 km) |
| Diamond Bar to Los Osos (California) | 193.35 mi (311.17 km) |
| Diamond Bar to Loudoun Valley Estates (Virginia) | 2,247.02 mi (3,616.22 km) |
| Diamond Bar to Louisville (Colorado) | 810.84 mi (1,304.92 km) |
| Diamond Bar to Louisville (Kentucky) | 1,809.88 mi (2,912.71 km) |
| Diamond Bar to Lovejoy (Georgia) | 1,916.83 mi (3,084.84 km) |
| Diamond Bar to Loveland (Colorado) | 828.86 mi (1,333.93 km) |
| Diamond Bar to Loveland (Ohio) | 1,883.88 mi (3,031.82 km) |
| Diamond Bar to Loves Park (Illinois) | 1,658.36 mi (2,668.88 km) |
| Diamond Bar to Lovington (New Mexico) | 837.85 mi (1,348.39 km) |
