| Rockford to Dallas (Oregon) | 1,710.93 mi (2,753.48 km) |
| Rockford to Dallas (Texas) | 777.62 mi (1,251.46 km) |
| Rockford to Dalton (Georgia) | 562.66 mi (905.52 km) |
| Rockford to Daly City (California) | 1,784.95 mi (2,872.59 km) |
| Rockford to Damascus (Maryland) | 653.86 mi (1,052.29 km) |
| Rockford to Damascus (Oregon) | 1,665.59 mi (2,680.50 km) |
| Rockford to Dana Point (California) | 1,665.79 mi (2,680.82 km) |
| Rockford to Danbury (Connecticut) | 803.83 mi (1,293.65 km) |
| Rockford to Dania Beach (Florida) | 1,227.82 mi (1,975.99 km) |
| Rockford to Danville (California) | 1,756.38 mi (2,826.63 km) |
| Rockford to Danville (Illinois) | 164.61 mi (264.92 km) |
| Rockford to Danville (Indiana) | 218.40 mi (351.48 km) |
| Rockford to Danville (Kentucky) | 391.47 mi (630.00 km) |
| Rockford to Danville (Virginia) | 646.91 mi (1,041.10 km) |
| Rockford to Daphne (Alabama) | 806.44 mi (1,297.84 km) |
