| Potomac to Duluth (Minnesota) | 924.77 mi (1,488.28 km) |
| Potomac to Dumas (Texas) | 1,371.88 mi (2,207.83 km) |
| Potomac to Dumont (New Jersey) | 215.71 mi (347.15 km) |
| Potomac to Duncan (Oklahoma) | 1,185.05 mi (1,907.15 km) |
| Potomac to Duncanville (Texas) | 1,185.88 mi (1,908.49 km) |
| Potomac to Dundalk (Maryland) | 41.49 mi (66.77 km) |
| Potomac to Dunedin (Florida) | 823.80 mi (1,325.78 km) |
| Potomac to Dunkirk (New York) | 264.31 mi (425.37 km) |
| Potomac to Dunmore (Pennsylvania) | 185.83 mi (299.06 km) |
| Potomac to Dunwoody (Georgia) | 528.07 mi (849.85 km) |
| Potomac to Durango (Colorado) | 1,663.90 mi (2,677.79 km) |
| Potomac to Durant (Oklahoma) | 1,118.65 mi (1,800.29 km) |
| Potomac to Durham (North Carolina) | 229.63 mi (369.55 km) |
| Potomac to Dyer (Indiana) | 569.90 mi (917.16 km) |
| Potomac to Dyersburg (Tennessee) | 697.70 mi (1,122.84 km) |
