| Tomball to Hillcrest Heights (Maryland) | 1,218.87 mi (1,961.59 km) |
| Tomball to Hilliard (Ohio) | 982.15 mi (1,580.61 km) |
| Tomball to Hillsboro (Oregon) | 1,818.34 mi (2,926.34 km) |
| Tomball to Hillsborough (California) | 1,612.48 mi (2,595.04 km) |
| Tomball to Hillsborough (New Jersey) | 1,378.57 mi (2,218.60 km) |
| Tomball to Hilo (Hawaii) | 3,755.43 mi (6,043.78 km) |
| Tomball to Hilton Head Island (South Carolina) | 890.39 mi (1,432.95 km) |
| Tomball to Hinesville (Georgia) | 837.78 mi (1,348.28 km) |
| Tomball to Hinsdale (Illinois) | 915.14 mi (1,472.78 km) |
| Tomball to Hobart (Indiana) | 916.09 mi (1,474.31 km) |
| Tomball to Hobbs (New Mexico) | 480.27 mi (772.92 km) |
| Tomball to Hobe Sound (Florida) | 961.11 mi (1,546.76 km) |
| Tomball to Hoboken (New Jersey) | 1,415.19 mi (2,277.53 km) |
| Tomball to Hockessin (Delaware) | 1,308.29 mi (2,105.49 km) |
| Tomball to Hoffman Estates (Illinois) | 925.35 mi (1,489.21 km) |
