| Keystone to Duluth (Minnesota) | 1,387.91 mi (2,233.62 km) |
| Keystone to Dumas (Texas) | 1,251.02 mi (2,013.33 km) |
| Keystone to Dumont (New Jersey) | 1,010.59 mi (1,626.39 km) |
| Keystone to Duncan (Oklahoma) | 1,005.27 mi (1,617.83 km) |
| Keystone to Duncanville (Texas) | 907.34 mi (1,460.23 km) |
| Keystone to Dundalk (Maryland) | 845.33 mi (1,360.43 km) |
| Keystone to Dunedin (Florida) | 13.23 mi (21.30 km) |
| Keystone to Dunkirk (New York) | 1,008.16 mi (1,622.48 km) |
| Keystone to Dunmore (Pennsylvania) | 999.06 mi (1,607.84 km) |
| Keystone to Dunwoody (Georgia) | 414.05 mi (666.35 km) |
| Keystone to Durango (Colorado) | 1,593.09 mi (2,563.83 km) |
| Keystone to Durant (Oklahoma) | 910.18 mi (1,464.79 km) |
| Keystone to Durham (North Carolina) | 583.74 mi (939.44 km) |
| Keystone to Dyer (Indiana) | 964.15 mi (1,551.65 km) |
| Keystone to Dyersburg (Tennessee) | 675.21 mi (1,086.65 km) |
