| Romeoville to Havelock (North Carolina) | 763.77 mi (1,229.17 km) |
| Romeoville to Haverhill (Massachusetts) | 872.81 mi (1,404.66 km) |
| Romeoville to Havre de Grace (Maryland) | 644.53 mi (1,037.27 km) |
| Romeoville to Hawaiian Gardens (California) | 1,714.17 mi (2,758.69 km) |
| Romeoville to Hawaiian Paradise Park (Hawaii) | 4,148.84 mi (6,676.92 km) |
| Romeoville to Hawthorne (California) | 1,725.57 mi (2,777.03 km) |
| Romeoville to Hawthorne (New Jersey) | 724.43 mi (1,165.85 km) |
| Romeoville to Hayden (Idaho) | 1,462.47 mi (2,353.63 km) |
| Romeoville to Hayesville (Oregon) | 1,754.89 mi (2,824.22 km) |
| Romeoville to Hays (Kansas) | 620.95 mi (999.32 km) |
| Romeoville to Haysville (Kansas) | 566.66 mi (911.96 km) |
| Romeoville to Hayward (California) | 1,817.01 mi (2,924.19 km) |
| Romeoville to Hazel Crest (Illinois) | 21.56 mi (34.69 km) |
| Romeoville to Hazel Dell (Washington) | 1,736.04 mi (2,793.89 km) |
| Romeoville to Hazel Park (Michigan) | 262.93 mi (423.15 km) |
