| Philadelphia to Dover (New Hampshire) | 310.58 mi (499.84 km) |
| Philadelphia to Dover (New Jersey) | 67.77 mi (109.07 km) |
| Philadelphia to Dover (Ohio) | 336.46 mi (541.48 km) |
| Philadelphia to Downers Grove (Illinois) | 683.36 mi (1,099.76 km) |
| Philadelphia to Downey (California) | 2,386.71 mi (3,841.04 km) |
| Philadelphia to Dranesville (Virginia) | 138.17 mi (222.37 km) |
| Philadelphia to Draper (Utah) | 1,922.83 mi (3,094.49 km) |
| Philadelphia to Drexel Heights (Arizona) | 2,062.60 mi (3,319.43 km) |
| Philadelphia to Drexel Hill (Pennsylvania) | 9.85 mi (15.86 km) |
| Philadelphia to Duarte (California) | 2,371.21 mi (3,816.10 km) |
| Philadelphia to Dublin (California) | 2,491.83 mi (4,010.21 km) |
| Philadelphia to Dublin (Georgia) | 673.95 mi (1,084.62 km) |
| Philadelphia to Dublin (Ohio) | 423.58 mi (681.69 km) |
| Philadelphia to Dubuque (Iowa) | 825.79 mi (1,328.98 km) |
| Philadelphia to Duluth (Georgia) | 647.02 mi (1,041.27 km) |
