| Rock Island to Dallas (Oregon) | 1,654.34 mi (2,662.40 km) |
| Rock Island to Dallas (Texas) | 689.04 mi (1,108.90 km) |
| Rock Island to Dalton (Georgia) | 554.11 mi (891.76 km) |
| Rock Island to Daly City (California) | 1,708.18 mi (2,749.05 km) |
| Rock Island to Damascus (Maryland) | 720.11 mi (1,158.91 km) |
| Rock Island to Damascus (Oregon) | 1,610.51 mi (2,591.86 km) |
| Rock Island to Dana Point (California) | 1,578.15 mi (2,539.78 km) |
| Rock Island to Danbury (Connecticut) | 884.94 mi (1,424.17 km) |
| Rock Island to Dania Beach (Florida) | 1,219.22 mi (1,962.15 km) |
| Rock Island to Danville (California) | 1,679.59 mi (2,703.03 km) |
| Rock Island to Danville (Illinois) | 180.43 mi (290.38 km) |
| Rock Island to Danville (Indiana) | 244.49 mi (393.47 km) |
| Rock Island to Danville (Kentucky) | 406.75 mi (654.60 km) |
| Rock Island to Danville (Virginia) | 687.47 mi (1,106.38 km) |
| Rock Island to Daphne (Alabama) | 764.15 mi (1,229.78 km) |
