| Diamond Bar to Yonkers (New York) | 2,431.03 mi (3,912.37 km) |
| Diamond Bar to Yorba Linda (California) | 8.03 mi (12.93 km) |
| Diamond Bar to York (Pennsylvania) | 2,284.17 mi (3,676.01 km) |
| Diamond Bar to Yorktown (Indiana) | 1,820.15 mi (2,929.25 km) |
| Diamond Bar to Yorkville (Illinois) | 1,678.09 mi (2,700.63 km) |
| Diamond Bar to Youngstown (Ohio) | 2,077.64 mi (3,343.63 km) |
| Diamond Bar to Youngsville (Louisiana) | 1,531.71 mi (2,465.05 km) |
| Diamond Bar to Ypsilanti (Michigan) | 1,929.39 mi (3,105.05 km) |
| Diamond Bar to Yuba City (California) | 413.35 mi (665.22 km) |
| Diamond Bar to Yucaipa (California) | 44.34 mi (71.37 km) |
| Diamond Bar to Yucca Valley (California) | 80.28 mi (129.20 km) |
| Diamond Bar to Yukon (Oklahoma) | 1,141.10 mi (1,836.42 km) |
| Diamond Bar to Yulee (Florida) | 2,118.32 mi (3,409.10 km) |
| Diamond Bar to Yuma (Arizona) | 211.99 mi (341.17 km) |
| Diamond Bar to Zachary (Louisiana) | 1,568.48 mi (2,524.23 km) |
