| Hartlepool to Decatur (Georgia) | 4,093.05 mi (6,587.12 km) |
| Hartlepool to Decatur (Illinois) | 3,957.44 mi (6,368.88 km) |
| Hartlepool to Deer Park (New York) | 3,326.32 mi (5,353.20 km) |
| Hartlepool to Deer Park (Texas) | 4,718.04 mi (7,592.95 km) |
| Hartlepool to Deerfield (Illinois) | 3,803.49 mi (6,121.13 km) |
| Hartlepool to Deerfield Beach (Florida) | 4,320.67 mi (6,953.45 km) |
| Hartlepool to Defiance (Ohio) | 3,719.46 mi (5,985.90 km) |
| Hartlepool to DeForest (Wisconsin) | 3,804.62 mi (6,122.94 km) |
| Hartlepool to DeKalb (Illinois) | 3,847.28 mi (6,191.60 km) |
| Hartlepool to Del Aire (California) | 5,273.63 mi (8,487.09 km) |
| Hartlepool to Del City (Oklahoma) | 4,493.02 mi (7,230.81 km) |
| Hartlepool to Del Rio (Texas) | 4,947.19 mi (7,961.73 km) |
| Hartlepool to DeLand (Florida) | 4,222.90 mi (6,796.10 km) |
| Hartlepool to Delano (California) | 5,191.95 mi (8,355.63 km) |
| Hartlepool to Delaware (Ohio) | 3,719.98 mi (5,986.74 km) |
