| Romeoville to Duluth (Minnesota) | 407.72 mi (656.16 km) |
| Romeoville to Dumas (Texas) | 845.40 mi (1,360.54 km) |
| Romeoville to Dumont (New Jersey) | 733.12 mi (1,179.84 km) |
| Romeoville to Duncan (Oklahoma) | 723.90 mi (1,165.01 km) |
| Romeoville to Duncanville (Texas) | 787.15 mi (1,266.80 km) |
| Romeoville to Dundalk (Maryland) | 631.06 mi (1,015.60 km) |
| Romeoville to Dunedin (Florida) | 986.19 mi (1,587.12 km) |
| Romeoville to Dunkirk (New York) | 453.37 mi (729.62 km) |
| Romeoville to Dunmore (Pennsylvania) | 645.83 mi (1,039.37 km) |
| Romeoville to Dunwoody (Georgia) | 570.00 mi (917.32 km) |
| Romeoville to Durango (Colorado) | 1,094.72 mi (1,761.78 km) |
| Romeoville to Durant (Oklahoma) | 694.50 mi (1,117.69 km) |
| Romeoville to Durham (North Carolina) | 630.07 mi (1,014.00 km) |
| Romeoville to Dyer (Indiana) | 31.91 mi (51.36 km) |
| Romeoville to Dyersburg (Tennessee) | 391.97 mi (630.82 km) |
