| Hartlepool to Dover (New Jersey) | 3,368.29 mi (5,420.74 km) |
| Hartlepool to Dover (Ohio) | 3,648.40 mi (5,871.53 km) |
| Hartlepool to Downers Grove (Illinois) | 3,827.68 mi (6,160.06 km) |
| Hartlepool to Downey (California) | 5,265.16 mi (8,473.45 km) |
| Hartlepool to Dranesville (Virginia) | 3,566.15 mi (5,739.17 km) |
| Hartlepool to Draper (Utah) | 4,697.03 mi (7,559.14 km) |
| Hartlepool to Drexel Heights (Arizona) | 5,143.89 mi (8,278.29 km) |
| Hartlepool to Drexel Hill (Pennsylvania) | 3,441.02 mi (5,537.78 km) |
| Hartlepool to Duarte (California) | 5,246.60 mi (8,443.59 km) |
| Hartlepool to Dublin (California) | 5,153.07 mi (8,293.07 km) |
| Hartlepool to Dublin (Georgia) | 4,103.97 mi (6,604.70 km) |
| Hartlepool to Dublin (Ohio) | 3,731.13 mi (6,004.68 km) |
| Hartlepool to Dubuque (Iowa) | 3,888.98 mi (6,258.70 km) |
| Hartlepool to Duluth (Georgia) | 4,075.37 mi (6,558.68 km) |
| Hartlepool to Duluth (Minnesota) | 3,728.97 mi (6,001.20 km) |
