| Thornton to Dover (New Jersey) | 3,360.25 mi (5,407.79 km) |
| Thornton to Dover (Ohio) | 3,645.35 mi (5,866.63 km) |
| Thornton to Downers Grove (Illinois) | 3,830.94 mi (6,165.30 km) |
| Thornton to Downey (California) | 5,285.59 mi (8,506.34 km) |
| Thornton to Dranesville (Virginia) | 3,558.22 mi (5,726.41 km) |
| Thornton to Draper (Utah) | 4,716.96 mi (7,591.22 km) |
| Thornton to Drexel Heights (Arizona) | 5,157.36 mi (8,299.96 km) |
| Thornton to Drexel Hill (Pennsylvania) | 3,432.49 mi (5,524.06 km) |
| Thornton to Duarte (California) | 5,267.03 mi (8,476.47 km) |
| Thornton to Dublin (California) | 5,178.75 mi (8,334.39 km) |
| Thornton to Dublin (Georgia) | 4,094.24 mi (6,589.04 km) |
| Thornton to Dublin (Ohio) | 3,728.94 mi (6,001.15 km) |
| Thornton to Dubuque (Iowa) | 3,894.94 mi (6,268.29 km) |
| Thornton to Duluth (Georgia) | 4,068.01 mi (6,546.83 km) |
| Thornton to Duluth (Minnesota) | 3,740.27 mi (6,019.38 km) |
