| Hartlepool to Dumas (Texas) | 4,629.61 mi (7,450.64 km) |
| Hartlepool to Dumont (New Jersey) | 3,343.68 mi (5,381.13 km) |
| Hartlepool to Duncan (Oklahoma) | 4,558.83 mi (7,336.72 km) |
| Hartlepool to Duncanville (Texas) | 4,624.45 mi (7,442.33 km) |
| Hartlepool to Dundalk (Maryland) | 3,519.26 mi (5,663.70 km) |
| Hartlepool to Dunedin (Florida) | 4,333.89 mi (6,974.72 km) |
| Hartlepool to Dunkirk (New York) | 3,475.05 mi (5,592.54 km) |
| Hartlepool to Dunmore (Pennsylvania) | 3,383.76 mi (5,445.64 km) |
| Hartlepool to Dunwoody (Georgia) | 4,084.88 mi (6,573.98 km) |
| Hartlepool to Durango (Colorado) | 4,751.24 mi (7,646.39 km) |
| Hartlepool to Durant (Oklahoma) | 4,533.08 mi (7,295.28 km) |
| Hartlepool to Durham (North Carolina) | 3,773.28 mi (6,072.51 km) |
| Hartlepool to Dyer (Indiana) | 3,823.93 mi (6,154.02 km) |
| Hartlepool to Dyersburg (Tennessee) | 4,167.81 mi (6,707.44 km) |
| Hartlepool to Eagan (Minnesota) | 3,859.63 mi (6,211.48 km) |
