| Ronkonkoma to Hillcrest Heights (Maryland) | 244.86 mi (394.06 km) |
| Ronkonkoma to Hilliard (Ohio) | 530.13 mi (853.17 km) |
| Ronkonkoma to Hillsboro (Oregon) | 2,490.77 mi (4,008.51 km) |
| Ronkonkoma to Hillsborough (California) | 2,611.74 mi (4,203.19 km) |
| Ronkonkoma to Hillsborough (New Jersey) | 82.66 mi (133.03 km) |
| Ronkonkoma to Hilo (Hawaii) | 4,929.68 mi (7,933.56 km) |
| Ronkonkoma to Hilton Head Island (South Carolina) | 729.82 mi (1,174.52 km) |
| Ronkonkoma to Hinesville (Georgia) | 779.04 mi (1,253.74 km) |
| Ronkonkoma to Hinsdale (Illinois) | 770.46 mi (1,239.94 km) |
| Ronkonkoma to Hobart (Indiana) | 736.80 mi (1,185.76 km) |
| Ronkonkoma to Hobbs (New Mexico) | 1,743.50 mi (2,805.90 km) |
| Ronkonkoma to Hobe Sound (Florida) | 1,029.55 mi (1,656.91 km) |
| Ronkonkoma to Hoboken (New Jersey) | 47.45 mi (76.36 km) |
| Ronkonkoma to Hockessin (Delaware) | 152.06 mi (244.71 km) |
| Ronkonkoma to Hoffman Estates (Illinois) | 781.99 mi (1,258.49 km) |
