| Hartlepool to Dardenne Prairie (Missouri) | 4,078.48 mi (6,563.68 km) |
| Hartlepool to Darien (Illinois) | 3,828.89 mi (6,162.00 km) |
| Hartlepool to Davenport (Iowa) | 3,932.41 mi (6,328.61 km) |
| Hartlepool to Davidson (North Carolina) | 3,872.38 mi (6,231.99 km) |
| Hartlepool to Davie (Florida) | 4,339.00 mi (6,982.95 km) |
| Hartlepool to Davis (California) | 5,098.97 mi (8,205.99 km) |
| Hartlepool to Dayton (Nevada) | 4,996.17 mi (8,040.56 km) |
| Hartlepool to Dayton (Ohio) | 3,786.72 mi (6,094.14 km) |
| Hartlepool to Daytona Beach (Florida) | 4,206.18 mi (6,769.19 km) |
| Hartlepool to De Pere (Wisconsin) | 3,701.47 mi (5,956.94 km) |
| Hartlepool to De Witt (New York) | 3,327.20 mi (5,354.61 km) |
| Hartlepool to Dearborn (Michigan) | 3,627.21 mi (5,837.42 km) |
| Hartlepool to Dearborn Heights (Michigan) | 3,629.38 mi (5,840.93 km) |
| Hartlepool to DeBary (Florida) | 4,231.74 mi (6,810.33 km) |
| Hartlepool to Decatur (Alabama) | 4,154.35 mi (6,685.79 km) |
