| Potomac to Decatur (Alabama) | 622.33 mi (1,001.54 km) |
| Potomac to Decatur (Georgia) | 535.63 mi (862.01 km) |
| Potomac to Decatur (Illinois) | 628.72 mi (1,011.83 km) |
| Potomac to Deer Park (New York) | 238.16 mi (383.29 km) |
| Potomac to Deer Park (Texas) | 1,204.89 mi (1,939.09 km) |
| Potomac to Deerfield (Illinois) | 599.54 mi (964.87 km) |
| Potomac to Deerfield Beach (Florida) | 894.39 mi (1,439.38 km) |
| Potomac to Defiance (Ohio) | 409.70 mi (659.35 km) |
| Potomac to DeForest (Wisconsin) | 695.31 mi (1,118.99 km) |
| Potomac to DeKalb (Illinois) | 639.24 mi (1,028.75 km) |
| Potomac to Del Aire (California) | 2,295.15 mi (3,693.69 km) |
| Potomac to Del City (Oklahoma) | 1,138.16 mi (1,831.69 km) |
| Potomac to Del Rio (Texas) | 1,502.55 mi (2,418.13 km) |
| Potomac to DeLand (Florida) | 728.83 mi (1,172.94 km) |
| Potomac to Delano (California) | 2,299.80 mi (3,701.16 km) |
