| Ronkonkoma to Hazelwood (Missouri) | 925.43 mi (1,489.34 km) |
| Ronkonkoma to Hazleton (Pennsylvania) | 149.12 mi (239.99 km) |
| Ronkonkoma to Healdsburg (California) | 2,612.27 mi (4,204.03 km) |
| Ronkonkoma to Heath (Ohio) | 492.83 mi (793.13 km) |
| Ronkonkoma to Heber (Utah) | 1,990.10 mi (3,202.76 km) |
| Ronkonkoma to Helena (Alabama) | 917.66 mi (1,476.84 km) |
| Ronkonkoma to Helena (Montana) | 1,962.85 mi (3,158.90 km) |
| Ronkonkoma to Hemet (California) | 2,435.17 mi (3,919.03 km) |
| Ronkonkoma to Henderson (Kentucky) | 798.27 mi (1,284.69 km) |
| Ronkonkoma to Henderson (Nevada) | 2,271.44 mi (3,655.54 km) |
| Ronkonkoma to Henderson (North Carolina) | 421.05 mi (677.61 km) |
| Ronkonkoma to Henderson (Texas) | 1,339.01 mi (2,154.93 km) |
| Ronkonkoma to Hendersonville (North Carolina) | 632.68 mi (1,018.21 km) |
| Ronkonkoma to Hendersonville (Tennessee) | 790.52 mi (1,272.22 km) |
| Ronkonkoma to Hercules (California) | 2,595.68 mi (4,177.34 km) |
