| Williamstown to Poinciana (Florida) | 881.20 mi (1,418.15 km) |
| Williamstown to Point Pleasant (New Jersey) | 55.18 mi (88.81 km) |
| Williamstown to Pomona (California) | 2,373.81 mi (3,820.27 km) |
| Williamstown to Pompano Beach (Florida) | 975.29 mi (1,569.57 km) |
| Williamstown to Pompton Lakes (New Jersey) | 97.91 mi (157.56 km) |
| Williamstown to Pompton Plains (New Jersey) | 95.27 mi (153.33 km) |
| Williamstown to Ponca City (Oklahoma) | 1,213.45 mi (1,952.86 km) |
| Williamstown to Ponce (Puerto Rico) | 1,578.79 mi (2,540.81 km) |
| Williamstown to Pontiac (Illinois) | 724.08 mi (1,165.30 km) |
| Williamstown to Pontiac (Michigan) | 477.89 mi (769.09 km) |
| Williamstown to Pooler (Georgia) | 630.47 mi (1,014.65 km) |
| Williamstown to Poplar Bluff (Missouri) | 860.60 mi (1,385.01 km) |
| Williamstown to Poquoson (Virginia) | 191.69 mi (308.49 km) |
| Williamstown to Port Angeles (Washington) | 2,439.85 mi (3,926.56 km) |
| Williamstown to Port Arthur (Texas) | 1,267.89 mi (2,040.47 km) |
