| Rock Island to Des Plaines (Illinois) | 143.63 mi (231.15 km) |
| Rock Island to Desert Hot Springs (California) | 1,503.98 mi (2,420.42 km) |
| Rock Island to DeSoto (Texas) | 703.53 mi (1,132.23 km) |
| Rock Island to Destin (Florida) | 798.77 mi (1,285.50 km) |
| Rock Island to Destrehan (Louisiana) | 795.17 mi (1,279.70 km) |
| Rock Island to Detroit (Michigan) | 389.54 mi (626.90 km) |
| Rock Island to Diamond Bar (California) | 1,567.26 mi (2,522.27 km) |
| Rock Island to Diamond Springs (California) | 1,602.75 mi (2,579.37 km) |
| Rock Island to Dickinson (North Dakota) | 710.38 mi (1,143.24 km) |
| Rock Island to Dickinson (Texas) | 867.20 mi (1,395.62 km) |
| Rock Island to Dickson (Tennessee) | 411.68 mi (662.53 km) |
| Rock Island to Difficult Run (Virginia) | 720.01 mi (1,158.74 km) |
| Rock Island to Dinuba (California) | 1,576.31 mi (2,536.83 km) |
| Rock Island to Discovery Bay (California) | 1,658.34 mi (2,668.84 km) |
| Rock Island to Dix Hills (New York) | 897.08 mi (1,443.72 km) |
