| Ronkonkoma to Hagerstown (Maryland) | 255.47 mi (411.13 km) |
| Ronkonkoma to Haines City (Florida) | 1,000.37 mi (1,609.95 km) |
| Ronkonkoma to Halawa (Hawaii) | 5,003.34 mi (8,052.09 km) |
| Ronkonkoma to Half Moon Bay (California) | 2,617.99 mi (4,213.25 km) |
| Ronkonkoma to Halfway (Maryland) | 258.46 mi (415.95 km) |
| Ronkonkoma to Hallandale Beach (Florida) | 1,099.98 mi (1,770.25 km) |
| Ronkonkoma to Haltom City (Texas) | 1,439.18 mi (2,316.14 km) |
| Ronkonkoma to Ham Lake (Minnesota) | 1,056.55 mi (1,700.35 km) |
| Ronkonkoma to Hamilton (Ohio) | 612.00 mi (984.92 km) |
| Ronkonkoma to Hamilton Square (New Jersey) | 89.67 mi (144.32 km) |
| Ronkonkoma to Hammond (Indiana) | 747.98 mi (1,203.76 km) |
| Ronkonkoma to Hammond (Louisiana) | 1,201.68 mi (1,933.92 km) |
| Ronkonkoma to Hammonton (New Jersey) | 117.42 mi (188.97 km) |
| Ronkonkoma to Hampton (Virginia) | 312.00 mi (502.12 km) |
| Ronkonkoma to Hampton Bays (New York) | 31.80 mi (51.18 km) |
