| Herndon to Plattsburgh (New York) | 444.18 mi (714.84 km) |
| Herndon to Pleasant Grove (Utah) | 1,818.14 mi (2,926.01 km) |
| Herndon to Pleasant Hill (California) | 2,394.15 mi (3,853.01 km) |
| Herndon to Pleasant Hill (Iowa) | 866.78 mi (1,394.95 km) |
| Herndon to Pleasant Prairie (Wisconsin) | 601.62 mi (968.22 km) |
| Herndon to Pleasant View (Utah) | 1,823.21 mi (2,934.18 km) |
| Herndon to Pleasanton (California) | 2,389.41 mi (3,845.38 km) |
| Herndon to Pleasanton (Texas) | 1,388.19 mi (2,234.08 km) |
| Herndon to Pleasantville (New Jersey) | 156.41 mi (251.72 km) |
| Herndon to Plover (Wisconsin) | 731.48 mi (1,177.21 km) |
| Herndon to Plum (Pennsylvania) | 164.22 mi (264.29 km) |
| Herndon to Plymouth (Indiana) | 499.17 mi (803.34 km) |
| Herndon to Plymouth (Minnesota) | 923.07 mi (1,485.54 km) |
| Herndon to Pocatello (Idaho) | 1,837.56 mi (2,957.27 km) |
| Herndon to Poinciana (Florida) | 785.51 mi (1,264.16 km) |
