| Hackettstown to Yonkers (New York) | 50.46 mi (81.21 km) |
| Hackettstown to Yorba Linda (California) | 2,382.17 mi (3,833.74 km) |
| Hackettstown to York (Pennsylvania) | 117.57 mi (189.22 km) |
| Hackettstown to Yorktown (Indiana) | 562.87 mi (905.85 km) |
| Hackettstown to Yorkville (Illinois) | 709.15 mi (1,141.26 km) |
| Hackettstown to Youngstown (Ohio) | 304.04 mi (489.31 km) |
| Hackettstown to Youngsville (Louisiana) | 1,215.18 mi (1,955.64 km) |
| Hackettstown to Ypsilanti (Michigan) | 464.58 mi (747.68 km) |
| Hackettstown to Yuba City (California) | 2,450.98 mi (3,944.47 km) |
| Hackettstown to Yucaipa (California) | 2,340.02 mi (3,765.90 km) |
| Hackettstown to Yucca Valley (California) | 2,305.03 mi (3,709.59 km) |
| Hackettstown to Yukon (Oklahoma) | 1,294.77 mi (2,083.72 km) |
| Hackettstown to Yulee (Florida) | 800.28 mi (1,287.93 km) |
| Hackettstown to Yuma (Arizona) | 2,251.86 mi (3,624.02 km) |
| Hackettstown to Zachary (Louisiana) | 1,152.02 mi (1,854.00 km) |
