| Tomball to Harrison (Ohio) | 881.68 mi (1,418.93 km) |
| Tomball to Harrison (Wisconsin) | 1,053.24 mi (1,695.03 km) |
| Tomball to Harrisonburg (Virginia) | 1,113.79 mi (1,792.47 km) |
| Tomball to Hartford (Connecticut) | 1,508.14 mi (2,427.12 km) |
| Tomball to Hartford (Wisconsin) | 997.05 mi (1,604.60 km) |
| Tomball to Hartselle (Alabama) | 588.92 mi (947.77 km) |
| Tomball to Hartsville (Tennessee) | 698.14 mi (1,123.55 km) |
| Tomball to Harvey (Illinois) | 911.03 mi (1,466.16 km) |
| Tomball to Harvey (Louisiana) | 332.57 mi (535.21 km) |
| Tomball to Hasbrouck Heights (New Jersey) | 1,416.37 mi (2,279.43 km) |
| Tomball to Haslett (Michigan) | 1,071.98 mi (1,725.18 km) |
| Tomball to Hastings (Minnesota) | 1,022.45 mi (1,645.48 km) |
| Tomball to Hastings (Nebraska) | 742.04 mi (1,194.20 km) |
| Tomball to Hattiesburg (Mississippi) | 383.61 mi (617.37 km) |
| Tomball to Hauppauge (New York) | 1,456.38 mi (2,343.82 km) |
