| Potomac to Paramount (California) | 2,284.69 mi (3,676.85 km) |
| Potomac to Paramus (New Jersey) | 212.46 mi (341.92 km) |
| Potomac to Paris (Kentucky) | 386.13 mi (621.41 km) |
| Potomac to Paris (Tennessee) | 635.78 mi (1,023.18 km) |
| Potomac to Paris (Texas) | 1,083.71 mi (1,744.07 km) |
| Potomac to Park Forest (Illinois) | 578.56 mi (931.10 km) |
| Potomac to Park Ridge (Illinois) | 596.01 mi (959.19 km) |
| Potomac to Parker (Colorado) | 1,470.10 mi (2,365.89 km) |
| Potomac to Parker (South Carolina) | 408.53 mi (657.47 km) |
| Potomac to Parkersburg (West Virginia) | 233.60 mi (375.95 km) |
| Potomac to Parkland (Florida) | 894.65 mi (1,439.80 km) |
| Potomac to Parkland (Washington) | 2,316.88 mi (3,728.66 km) |
| Potomac to Parkville (Maryland) | 42.82 mi (68.91 km) |
| Potomac to Parkway (California) | 2,360.81 mi (3,799.36 km) |
| Potomac to Parlier (California) | 2,296.79 mi (3,696.33 km) |
