| Mackworth to Dover (New Jersey) | 3,389.40 mi (5,454.71 km) |
| Mackworth to Dover (Ohio) | 3,678.31 mi (5,919.66 km) |
| Mackworth to Downers Grove (Illinois) | 3,868.47 mi (6,225.70 km) |
| Mackworth to Downey (California) | 5,333.95 mi (8,584.17 km) |
| Mackworth to Dranesville (Virginia) | 3,587.40 mi (5,773.36 km) |
| Mackworth to Draper (Utah) | 4,765.11 mi (7,668.70 km) |
| Mackworth to Drexel Heights (Arizona) | 5,201.51 mi (8,371.02 km) |
| Mackworth to Drexel Hill (Pennsylvania) | 3,461.24 mi (5,570.32 km) |
| Mackworth to Duarte (California) | 5,315.39 mi (8,554.29 km) |
| Mackworth to Dublin (California) | 5,230.01 mi (8,416.89 km) |
| Mackworth to Dublin (Georgia) | 4,121.80 mi (6,633.39 km) |
| Mackworth to Dublin (Ohio) | 3,762.51 mi (6,055.18 km) |
| Mackworth to Dubuque (Iowa) | 3,934.35 mi (6,331.73 km) |
| Mackworth to Duluth (Georgia) | 4,097.49 mi (6,594.27 km) |
| Mackworth to Duluth (Minnesota) | 3,783.29 mi (6,088.62 km) |
