| Williamsport to Petaluma (California) | 2,403.17 mi (3,867.52 km) |
| Williamsport to Petersburg (Virginia) | 279.48 mi (449.77 km) |
| Williamsport to Pflugerville (Texas) | 1,366.45 mi (2,199.10 km) |
| Williamsport to Pharr (Texas) | 1,592.97 mi (2,563.63 km) |
| Williamsport to Phelan (California) | 2,237.60 mi (3,601.07 km) |
| Williamsport to Phenix City (Alabama) | 749.71 mi (1,206.54 km) |
| Williamsport to Philadelphia (Pennsylvania) | 131.18 mi (211.11 km) |
| Williamsport to Phillipsburg (New Jersey) | 103.98 mi (167.34 km) |
| Williamsport to Phoenix (Arizona) | 1,980.67 mi (3,187.58 km) |
| Williamsport to Phoenixville (Pennsylvania) | 110.15 mi (177.27 km) |
| Williamsport to Picayune (Mississippi) | 1,021.36 mi (1,643.73 km) |
| Williamsport to Pickerington (Ohio) | 314.88 mi (506.75 km) |
| Williamsport to Pico Rivera (California) | 2,279.84 mi (3,669.05 km) |
| Williamsport to Piedmont (California) | 2,392.76 mi (3,850.77 km) |
| Williamsport to Pierre (South Dakota) | 1,195.71 mi (1,924.31 km) |
