| Holtsville to Hillcrest Heights (Maryland) | 248.71 mi (400.27 km) |
| Holtsville to Hilliard (Ohio) | 534.34 mi (859.93 km) |
| Holtsville to Hillsboro (Oregon) | 2,494.32 mi (4,014.22 km) |
| Holtsville to Hillsborough (California) | 2,615.71 mi (4,209.58 km) |
| Holtsville to Hillsborough (New Jersey) | 86.86 mi (139.79 km) |
| Holtsville to Hilo (Hawaii) | 4,933.69 mi (7,940.00 km) |
| Holtsville to Hilton Head Island (South Carolina) | 732.86 mi (1,179.42 km) |
| Holtsville to Hinesville (Georgia) | 782.19 mi (1,258.81 km) |
| Holtsville to Hinsdale (Illinois) | 774.47 mi (1,246.39 km) |
| Holtsville to Hobart (Indiana) | 740.84 mi (1,192.27 km) |
| Holtsville to Hobbs (New Mexico) | 1,747.72 mi (2,812.69 km) |
| Holtsville to Hobe Sound (Florida) | 1,031.87 mi (1,660.64 km) |
| Holtsville to Hoboken (New Jersey) | 51.66 mi (83.14 km) |
| Holtsville to Hockessin (Delaware) | 156.06 mi (251.16 km) |
| Holtsville to Hoffman Estates (Illinois) | 785.97 mi (1,264.90 km) |
