| Romeoville to Hazelwood (Missouri) | 230.35 mi (370.71 km) |
| Romeoville to Hazleton (Pennsylvania) | 630.81 mi (1,015.19 km) |
| Romeoville to Healdsburg (California) | 1,835.86 mi (2,954.54 km) |
| Romeoville to Heath (Ohio) | 315.92 mi (508.42 km) |
| Romeoville to Heber (Utah) | 1,212.44 mi (1,951.23 km) |
| Romeoville to Helena (Alabama) | 580.65 mi (934.47 km) |
| Romeoville to Helena (Montana) | 1,229.77 mi (1,979.13 km) |
| Romeoville to Hemet (California) | 1,662.37 mi (2,675.32 km) |
| Romeoville to Henderson (Kentucky) | 263.46 mi (424.00 km) |
| Romeoville to Henderson (Nevada) | 1,494.36 mi (2,404.95 km) |
| Romeoville to Henderson (North Carolina) | 635.74 mi (1,023.13 km) |
| Romeoville to Henderson (Texas) | 751.35 mi (1,209.17 km) |
| Romeoville to Hendersonville (North Carolina) | 531.73 mi (855.74 km) |
| Romeoville to Hendersonville (Tennessee) | 376.66 mi (606.17 km) |
| Romeoville to Hercules (California) | 1,817.83 mi (2,925.51 km) |
