| Houston to Hutchinson (Minnesota) | 1,044.73 mi (1,681.33 km) |
| Houston to Hutto (Texas) | 138.89 mi (223.52 km) |
| Houston to Hyattsville (Maryland) | 1,224.02 mi (1,969.88 km) |
| Houston to Hybla Valley (Virginia) | 1,211.53 mi (1,949.77 km) |
| Houston to Idaho Falls (Idaho) | 1,317.23 mi (2,119.88 km) |
| Houston to Idylwood (Virginia) | 1,209.73 mi (1,946.87 km) |
| Houston to Ilchester (Maryland) | 1,240.77 mi (1,996.83 km) |
| Houston to Immokalee (Florida) | 881.45 mi (1,418.56 km) |
| Houston to Imperial (California) | 1,208.01 mi (1,944.10 km) |
| Houston to Imperial Beach (California) | 1,296.51 mi (2,086.53 km) |
| Houston to Independence (Kentucky) | 883.64 mi (1,422.07 km) |
| Houston to Independence (Missouri) | 645.35 mi (1,038.59 km) |
| Houston to Indian Trail (North Carolina) | 932.86 mi (1,501.30 km) |
| Houston to Indiana (Pennsylvania) | 1,179.97 mi (1,898.98 km) |
| Houston to Indianapolis (Indiana) | 865.88 mi (1,393.50 km) |
