| Potomac to Darby (Pennsylvania) | 120.66 mi (194.19 km) |
| Potomac to Dardenne Prairie (Missouri) | 727.63 mi (1,171.01 km) |
| Potomac to Darien (Illinois) | 597.83 mi (962.12 km) |
| Potomac to Davenport (Iowa) | 727.52 mi (1,170.82 km) |
| Potomac to Davidson (North Carolina) | 315.15 mi (507.18 km) |
| Potomac to Davie (Florida) | 911.54 mi (1,466.98 km) |
| Potomac to Davis (California) | 2,374.68 mi (3,821.67 km) |
| Potomac to Dayton (Nevada) | 2,249.55 mi (3,620.29 km) |
| Potomac to Dayton (Ohio) | 377.70 mi (607.85 km) |
| Potomac to Daytona Beach (Florida) | 713.75 mi (1,148.66 km) |
| Potomac to De Pere (Wisconsin) | 673.73 mi (1,084.26 km) |
| Potomac to De Witt (New York) | 283.46 mi (456.18 km) |
| Potomac to Dearborn (Michigan) | 389.00 mi (626.04 km) |
| Potomac to Dearborn Heights (Michigan) | 391.86 mi (630.64 km) |
| Potomac to DeBary (Florida) | 738.79 mi (1,188.96 km) |
