| Ronkonkoma to Horizon West (Florida) | 979.91 mi (1,577.01 km) |
| Ronkonkoma to Hormigueros (Puerto Rico) | 1,605.72 mi (2,584.16 km) |
| Ronkonkoma to Horn Lake (Mississippi) | 1,005.55 mi (1,618.28 km) |
| Ronkonkoma to Hot Springs (Arkansas) | 1,170.80 mi (1,884.22 km) |
| Ronkonkoma to Hot Springs Village (Arkansas) | 1,161.13 mi (1,868.65 km) |
| Ronkonkoma to Houma (Louisiana) | 1,255.56 mi (2,020.62 km) |
| Ronkonkoma to Houston (Texas) | 1,461.84 mi (2,352.61 km) |
| Ronkonkoma to Howard (Wisconsin) | 802.12 mi (1,290.88 km) |
| Ronkonkoma to Huber Heights (Ohio) | 582.04 mi (936.70 km) |
| Ronkonkoma to Hudson (Florida) | 1,016.01 mi (1,635.10 km) |
| Ronkonkoma to Hudson (Ohio) | 434.39 mi (699.08 km) |
| Ronkonkoma to Hudson (Wisconsin) | 1,030.49 mi (1,658.41 km) |
| Ronkonkoma to Hueytown (Alabama) | 918.18 mi (1,477.67 km) |
| Ronkonkoma to Hugo (Minnesota) | 1,043.76 mi (1,679.78 km) |
| Ronkonkoma to Humacao (Puerto Rico) | 1,624.03 mi (2,613.62 km) |
