| Williamsport to Decatur (Alabama) | 710.92 mi (1,144.11 km) |
| Williamsport to Decatur (Georgia) | 651.09 mi (1,047.83 km) |
| Williamsport to Decatur (Illinois) | 631.38 mi (1,016.11 km) |
| Williamsport to Deer Park (New York) | 196.50 mi (316.24 km) |
| Williamsport to Deer Park (Texas) | 1,288.43 mi (2,073.53 km) |
| Williamsport to Deerfield (Illinois) | 561.15 mi (903.08 km) |
| Williamsport to Deerfield Beach (Florida) | 1,046.86 mi (1,684.75 km) |
| Williamsport to Defiance (Ohio) | 380.54 mi (612.42 km) |
| Williamsport to DeForest (Wisconsin) | 643.73 mi (1,035.99 km) |
| Williamsport to DeKalb (Illinois) | 606.63 mi (976.27 km) |
| Williamsport to Del Aire (California) | 2,296.55 mi (3,695.94 km) |
| Williamsport to Del City (Oklahoma) | 1,172.46 mi (1,886.88 km) |
| Williamsport to Del Rio (Texas) | 1,566.82 mi (2,521.55 km) |
| Williamsport to DeLand (Florida) | 877.33 mi (1,411.93 km) |
| Williamsport to Delano (California) | 2,291.44 mi (3,687.72 km) |
