| Holtsville to Hutchinson (Minnesota) | 1,113.04 mi (1,791.26 km) |
| Holtsville to Hutto (Texas) | 1,540.04 mi (2,478.46 km) |
| Holtsville to Hyattsville (Maryland) | 243.54 mi (391.94 km) |
| Holtsville to Hybla Valley (Virginia) | 257.43 mi (414.30 km) |
| Holtsville to Idaho Falls (Idaho) | 1,987.57 mi (3,198.69 km) |
| Holtsville to Idylwood (Virginia) | 257.57 mi (414.51 km) |
| Holtsville to Ilchester (Maryland) | 225.69 mi (363.21 km) |
| Holtsville to Immokalee (Florida) | 1,103.48 mi (1,775.87 km) |
| Holtsville to Imperial (California) | 2,391.16 mi (3,848.19 km) |
| Holtsville to Imperial Beach (California) | 2,480.14 mi (3,991.40 km) |
| Holtsville to Independence (Kentucky) | 622.89 mi (1,002.44 km) |
| Holtsville to Independence (Missouri) | 1,131.95 mi (1,821.70 km) |
| Holtsville to Indian Trail (North Carolina) | 573.10 mi (922.32 km) |
| Holtsville to Indiana (Pennsylvania) | 320.20 mi (515.32 km) |
| Holtsville to Indianapolis (Indiana) | 693.46 mi (1,116.01 km) |
