| Potomac to Delaware (Ohio) | 324.82 mi (522.75 km) |
| Potomac to Delhi (California) | 2,345.41 mi (3,774.57 km) |
| Potomac to Delray Beach (Florida) | 883.78 mi (1,422.31 km) |
| Potomac to Deltona (Florida) | 735.25 mi (1,183.27 km) |
| Potomac to Deming (New Mexico) | 1,768.96 mi (2,846.87 km) |
| Potomac to Denison (Texas) | 1,134.91 mi (1,826.46 km) |
| Potomac to Dent (Ohio) | 400.37 mi (644.34 km) |
| Potomac to Denton (Texas) | 1,180.21 mi (1,899.36 km) |
| Potomac to Dentsville (South Carolina) | 399.92 mi (643.60 km) |
| Potomac to Denver (Colorado) | 1,473.20 mi (2,370.89 km) |
| Potomac to Depew (New York) | 280.58 mi (451.55 km) |
| Potomac to Derby (Connecticut) | 269.46 mi (433.65 km) |
| Potomac to Derby (Kansas) | 1,090.39 mi (1,754.82 km) |
| Potomac to Des Moines (Iowa) | 881.58 mi (1,418.76 km) |
| Potomac to Des Moines (Washington) | 2,310.39 mi (3,718.21 km) |
