| Potomac to Pottsville (Pennsylvania) | 126.40 mi (203.42 km) |
| Potomac to Poughkeepsie (New York) | 252.97 mi (407.11 km) |
| Potomac to Poulsbo (Washington) | 2,324.60 mi (3,741.08 km) |
| Potomac to Poway (California) | 2,246.45 mi (3,615.31 km) |
| Potomac to Powder Springs (Georgia) | 547.22 mi (880.66 km) |
| Potomac to Powell (Ohio) | 323.45 mi (520.55 km) |
| Potomac to Powell (Tennessee) | 427.19 mi (687.49 km) |
| Potomac to Prairie Ridge (Washington) | 2,302.94 mi (3,706.22 km) |
| Potomac to Prairie Village (Kansas) | 935.11 mi (1,504.91 km) |
| Potomac to Prairieville (Louisiana) | 984.45 mi (1,584.33 km) |
| Potomac to Prattville (Alabama) | 688.49 mi (1,108.01 km) |
| Potomac to Preakness (New Jersey) | 205.90 mi (331.36 km) |
| Potomac to Prescott (Arizona) | 1,961.80 mi (3,157.21 km) |
| Potomac to Prescott Valley (Arizona) | 1,954.59 mi (3,145.61 km) |
| Potomac to Prichard (Alabama) | 840.39 mi (1,352.48 km) |
