| Potomac to Pittsburg (California) | 2,392.93 mi (3,851.06 km) |
| Potomac to Pittsburg (Kansas) | 955.18 mi (1,537.21 km) |
| Potomac to Pittsburgh (Pennsylvania) | 177.63 mi (285.87 km) |
| Potomac to Pittsfield (Massachusetts) | 314.30 mi (505.82 km) |
| Potomac to Placentia (California) | 2,268.52 mi (3,650.82 km) |
| Potomac to Placerville (California) | 2,322.58 mi (3,737.83 km) |
| Potomac to Plainfield (Illinois) | 607.89 mi (978.30 km) |
| Potomac to Plainfield (Indiana) | 492.34 mi (792.34 km) |
| Potomac to Plainfield (New Jersey) | 184.34 mi (296.67 km) |
| Potomac to Plainview (New York) | 232.02 mi (373.39 km) |
| Potomac to Plainview (Texas) | 1,396.12 mi (2,246.84 km) |
| Potomac to Plano (Illinois) | 624.04 mi (1,004.29 km) |
| Potomac to Plano (Texas) | 1,164.79 mi (1,874.55 km) |
| Potomac to Plant City (Florida) | 810.91 mi (1,305.04 km) |
| Potomac to Plantation (Florida) | 908.06 mi (1,461.38 km) |
