| Romeoville to Horizon West (Florida) | 981.65 mi (1,579.81 km) |
| Romeoville to Hormigueros (Puerto Rico) | 2,040.65 mi (3,284.11 km) |
| Romeoville to Horn Lake (Mississippi) | 473.51 mi (762.04 km) |
| Romeoville to Hot Springs (Arkansas) | 561.95 mi (904.38 km) |
| Romeoville to Hot Springs Village (Arkansas) | 549.43 mi (884.23 km) |
| Romeoville to Houma (Louisiana) | 845.35 mi (1,360.46 km) |
| Romeoville to Houston (Texas) | 914.06 mi (1,471.04 km) |
| Romeoville to Howard (Wisconsin) | 203.03 mi (326.75 km) |
| Romeoville to Huber Heights (Ohio) | 241.92 mi (389.34 km) |
| Romeoville to Hudson (Florida) | 966.26 mi (1,555.04 km) |
| Romeoville to Hudson (Ohio) | 345.90 mi (556.67 km) |
| Romeoville to Hudson (Wisconsin) | 327.38 mi (526.86 km) |
| Romeoville to Hueytown (Alabama) | 570.16 mi (917.59 km) |
| Romeoville to Hugo (Minnesota) | 345.09 mi (555.36 km) |
| Romeoville to Humacao (Puerto Rico) | 2,087.37 mi (3,359.29 km) |
