| Tomball to Hamtramck (Michigan) | 1,098.53 mi (1,767.91 km) |
| Tomball to Hanahan (South Carolina) | 939.55 mi (1,512.06 km) |
| Tomball to Hanford (California) | 1,450.17 mi (2,333.82 km) |
| Tomball to Hannibal (Missouri) | 705.90 mi (1,136.04 km) |
| Tomball to Hanover (Pennsylvania) | 1,246.85 mi (2,006.61 km) |
| Tomball to Hanover Park (Illinois) | 920.44 mi (1,481.31 km) |
| Tomball to Happy Valley (Oregon) | 1,796.98 mi (2,891.96 km) |
| Tomball to Harker Heights (Texas) | 137.59 mi (221.43 km) |
| Tomball to Harlingen (Texas) | 297.93 mi (479.47 km) |
| Tomball to Harper Woods (Michigan) | 1,105.16 mi (1,778.58 km) |
| Tomball to Harrisburg (North Carolina) | 940.81 mi (1,514.10 km) |
| Tomball to Harrisburg (Pennsylvania) | 1,266.23 mi (2,037.80 km) |
| Tomball to Harrison (Arkansas) | 448.70 mi (722.12 km) |
| Tomball to Harrison (New Jersey) | 1,409.18 mi (2,267.86 km) |
| Tomball to Harrison (New York) | 1,437.87 mi (2,314.03 km) |
