| Gaithersburg to Des Plaines (Illinois) | 595.02 mi (957.60 km) |
| Gaithersburg to Desert Hot Springs (California) | 2,194.90 mi (3,532.35 km) |
| Gaithersburg to DeSoto (Texas) | 1,186.16 mi (1,908.94 km) |
| Gaithersburg to Destin (Florida) | 799.50 mi (1,286.67 km) |
| Gaithersburg to Destrehan (Louisiana) | 978.93 mi (1,575.44 km) |
| Gaithersburg to Detroit (Michigan) | 381.14 mi (613.39 km) |
| Gaithersburg to Diamond Bar (California) | 2,261.92 mi (3,640.20 km) |
| Gaithersburg to Diamond Springs (California) | 2,322.48 mi (3,737.68 km) |
| Gaithersburg to Dickinson (North Dakota) | 1,391.06 mi (2,238.70 km) |
| Gaithersburg to Dickinson (Texas) | 1,215.06 mi (1,955.45 km) |
| Gaithersburg to Dickson (Tennessee) | 594.52 mi (956.78 km) |
| Gaithersburg to Difficult Run (Virginia) | 17.63 mi (28.38 km) |
| Gaithersburg to Dinuba (California) | 2,288.11 mi (3,682.35 km) |
| Gaithersburg to Discovery Bay (California) | 2,376.70 mi (3,824.93 km) |
| Gaithersburg to Dix Hills (New York) | 235.36 mi (378.77 km) |
