| Romeoville to Dover (New Hampshire) | 883.19 mi (1,421.35 km) |
| Romeoville to Dover (New Jersey) | 704.43 mi (1,133.66 km) |
| Romeoville to Dover (Ohio) | 352.93 mi (567.99 km) |
| Romeoville to Downers Grove (Illinois) | 12.05 mi (19.39 km) |
| Romeoville to Downey (California) | 1,713.77 mi (2,758.05 km) |
| Romeoville to Dranesville (Virginia) | 593.47 mi (955.09 km) |
| Romeoville to Draper (Utah) | 1,236.38 mi (1,989.77 km) |
| Romeoville to Drexel Heights (Arizona) | 1,421.30 mi (2,287.37 km) |
| Romeoville to Drexel Hill (Pennsylvania) | 678.72 mi (1,092.29 km) |
| Romeoville to Duarte (California) | 1,697.60 mi (2,732.03 km) |
| Romeoville to Dublin (California) | 1,805.80 mi (2,906.15 km) |
| Romeoville to Dublin (Georgia) | 689.74 mi (1,110.02 km) |
| Romeoville to Dublin (Ohio) | 279.30 mi (449.49 km) |
| Romeoville to Dubuque (Iowa) | 146.57 mi (235.88 km) |
| Romeoville to Duluth (Georgia) | 569.17 mi (916.00 km) |
