| Prospect Heights to Dover (New Hampshire) | 867.84 mi (1,396.65 km) |
| Prospect Heights to Dover (New Jersey) | 696.14 mi (1,120.33 km) |
| Prospect Heights to Dover (Ohio) | 351.63 mi (565.89 km) |
| Prospect Heights to Downers Grove (Illinois) | 21.85 mi (35.16 km) |
| Prospect Heights to Downey (California) | 1,727.47 mi (2,780.10 km) |
| Prospect Heights to Dranesville (Virginia) | 593.91 mi (955.80 km) |
| Prospect Heights to Draper (Utah) | 1,243.21 mi (2,000.76 km) |
| Prospect Heights to Drexel Heights (Arizona) | 1,441.06 mi (2,319.16 km) |
| Prospect Heights to Drexel Hill (Pennsylvania) | 673.90 mi (1,084.54 km) |
| Prospect Heights to Duarte (California) | 1,711.13 mi (2,753.80 km) |
| Prospect Heights to Dublin (California) | 1,813.42 mi (2,918.41 km) |
| Prospect Heights to Dublin (Georgia) | 715.52 mi (1,151.51 km) |
| Prospect Heights to Dublin (Ohio) | 284.39 mi (457.69 km) |
| Prospect Heights to Dubuque (Iowa) | 144.69 mi (232.85 km) |
| Prospect Heights to Duluth (Georgia) | 595.93 mi (959.06 km) |
