| Potomac to Poinciana (Florida) | 791.77 mi (1,274.23 km) |
| Potomac to Point Pleasant (New Jersey) | 181.92 mi (292.77 km) |
| Potomac to Pomona (California) | 2,259.18 mi (3,635.80 km) |
| Potomac to Pompano Beach (Florida) | 898.66 mi (1,446.25 km) |
| Potomac to Pompton Lakes (New Jersey) | 206.29 mi (331.99 km) |
| Potomac to Pompton Plains (New Jersey) | 203.88 mi (328.11 km) |
| Potomac to Ponca City (Oklahoma) | 1,093.22 mi (1,759.36 km) |
| Potomac to Ponce (Puerto Rico) | 1,583.86 mi (2,548.97 km) |
| Potomac to Pontiac (Illinois) | 619.48 mi (996.96 km) |
| Potomac to Pontiac (Michigan) | 405.48 mi (652.56 km) |
| Potomac to Pooler (Georgia) | 529.06 mi (851.45 km) |
| Potomac to Poplar Bluff (Missouri) | 736.70 mi (1,185.60 km) |
| Potomac to Poquoson (Virginia) | 137.80 mi (221.77 km) |
| Potomac to Port Angeles (Washington) | 2,361.42 mi (3,800.33 km) |
| Potomac to Port Arthur (Texas) | 1,141.42 mi (1,836.94 km) |
