| Potomac to Des Plaines (Illinois) | 599.26 mi (964.42 km) |
| Potomac to Desert Hot Springs (California) | 2,196.37 mi (3,534.72 km) |
| Potomac to DeSoto (Texas) | 1,184.82 mi (1,906.78 km) |
| Potomac to Destin (Florida) | 794.21 mi (1,278.16 km) |
| Potomac to Destrehan (Louisiana) | 974.84 mi (1,568.85 km) |
| Potomac to Detroit (Michigan) | 387.10 mi (622.98 km) |
| Potomac to Diamond Bar (California) | 2,263.50 mi (3,642.75 km) |
| Potomac to Diamond Springs (California) | 2,325.41 mi (3,742.38 km) |
| Potomac to Dickinson (North Dakota) | 1,396.23 mi (2,247.02 km) |
| Potomac to Dickinson (Texas) | 1,212.07 mi (1,950.64 km) |
| Potomac to Dickson (Tennessee) | 593.00 mi (954.34 km) |
| Potomac to Difficult Run (Virginia) | 11.31 mi (18.19 km) |
| Potomac to Dinuba (California) | 2,290.43 mi (3,686.09 km) |
| Potomac to Discovery Bay (California) | 2,379.48 mi (3,829.40 km) |
| Potomac to Dix Hills (New York) | 238.85 mi (384.39 km) |
