| Rockwall to Hazelwood (Missouri) | 528.43 mi (850.43 km) |
| Rockwall to Hazleton (Pennsylvania) | 1,254.98 mi (2,019.69 km) |
| Rockwall to Healdsburg (California) | 1,527.18 mi (2,457.77 km) |
| Rockwall to Heath (Ohio) | 918.03 mi (1,477.42 km) |
| Rockwall to Heber (Utah) | 978.60 mi (1,574.90 km) |
| Rockwall to Helena (Alabama) | 553.63 mi (890.98 km) |
| Rockwall to Helena (Montana) | 1,251.66 mi (2,014.36 km) |
| Rockwall to Hemet (California) | 1,186.32 mi (1,909.20 km) |
| Rockwall to Henderson (Kentucky) | 603.43 mi (971.13 km) |
| Rockwall to Henderson (Nevada) | 1,079.20 mi (1,736.81 km) |
| Rockwall to Henderson (North Carolina) | 1,049.74 mi (1,689.40 km) |
| Rockwall to Henderson (Texas) | 109.05 mi (175.51 km) |
| Rockwall to Hendersonville (North Carolina) | 816.01 mi (1,313.25 km) |
| Rockwall to Hendersonville (Tennessee) | 606.07 mi (975.38 km) |
| Rockwall to Hercules (California) | 1,489.71 mi (2,397.45 km) |
