| Rock Island to Hazelwood (Missouri) | 185.23 mi (298.10 km) |
| Rock Island to Hazleton (Pennsylvania) | 759.36 mi (1,222.08 km) |
| Rock Island to Healdsburg (California) | 1,708.81 mi (2,750.06 km) |
| Rock Island to Heath (Ohio) | 437.53 mi (704.13 km) |
| Rock Island to Heber (Utah) | 1,085.06 mi (1,746.23 km) |
| Rock Island to Helena (Alabama) | 600.89 mi (967.04 km) |
| Rock Island to Helena (Montana) | 1,118.10 mi (1,799.40 km) |
| Rock Island to Hemet (California) | 1,534.14 mi (2,468.97 km) |
| Rock Island to Henderson (Kentucky) | 297.32 mi (478.49 km) |
| Rock Island to Henderson (Nevada) | 1,365.58 mi (2,197.69 km) |
| Rock Island to Henderson (North Carolina) | 743.60 mi (1,196.71 km) |
| Rock Island to Henderson (Texas) | 684.09 mi (1,100.93 km) |
| Rock Island to Hendersonville (North Carolina) | 610.90 mi (983.15 km) |
| Rock Island to Hendersonville (Tennessee) | 416.02 mi (669.52 km) |
| Rock Island to Hercules (California) | 1,690.18 mi (2,720.09 km) |
