| Herndon to Pikesville (Maryland) | 46.74 mi (75.22 km) |
| Herndon to Pine Bluff (Arkansas) | 874.40 mi (1,407.21 km) |
| Herndon to Pine Castle (Florida) | 760.90 mi (1,224.55 km) |
| Herndon to Pine Hill (New Jersey) | 140.13 mi (225.51 km) |
| Herndon to Pine Hills (Florida) | 754.83 mi (1,214.79 km) |
| Herndon to Pinecrest (Florida) | 934.78 mi (1,504.38 km) |
| Herndon to Pinehurst (North Carolina) | 285.10 mi (458.82 km) |
| Herndon to Pinellas Park (Florida) | 826.34 mi (1,329.86 km) |
| Herndon to Pineville (Louisiana) | 996.99 mi (1,604.50 km) |
| Herndon to Pineville (North Carolina) | 330.65 mi (532.13 km) |
| Herndon to Pinewood (Florida) | 919.93 mi (1,480.48 km) |
| Herndon to Piney Green (North Carolina) | 291.60 mi (469.29 km) |
| Herndon to Pinole (California) | 2,404.27 mi (3,869.29 km) |
| Herndon to Piqua (Ohio) | 374.17 mi (602.17 km) |
| Herndon to Pittsburg (California) | 2,383.54 mi (3,835.93 km) |
