| Potomac to Pelham (Alabama) | 662.55 mi (1,066.27 km) |
| Potomac to Pell City (Alabama) | 629.74 mi (1,013.47 km) |
| Potomac to Pella (Iowa) | 844.75 mi (1,359.50 km) |
| Potomac to Pembroke Pines (Florida) | 916.61 mi (1,475.15 km) |
| Potomac to Pendleton (Oregon) | 2,149.57 mi (3,459.41 km) |
| Potomac to Pensacola (Florida) | 819.37 mi (1,318.65 km) |
| Potomac to Peoria (Arizona) | 1,972.86 mi (3,175.01 km) |
| Potomac to Peoria (Illinois) | 668.81 mi (1,076.35 km) |
| Potomac to Perris (California) | 2,236.91 mi (3,599.95 km) |
| Potomac to Perry (Georgia) | 581.52 mi (935.86 km) |
| Potomac to Perry Hall (Maryland) | 46.98 mi (75.60 km) |
| Potomac to Perrysburg (Ohio) | 381.82 mi (614.49 km) |
| Potomac to Perth Amboy (New Jersey) | 186.82 mi (300.66 km) |
| Potomac to Peru (Indiana) | 485.81 mi (781.83 km) |
| Potomac to Petal (Mississippi) | 860.65 mi (1,385.08 km) |
