| Herndon to Payson (Arizona) | 1,898.94 mi (3,056.05 km) |
| Herndon to Payson (Utah) | 1,821.48 mi (2,931.39 km) |
| Herndon to Peabody (Massachusetts) | 416.14 mi (669.71 km) |
| Herndon to Peachtree City (Georgia) | 555.46 mi (893.92 km) |
| Herndon to Peachtree Corners (Georgia) | 513.66 mi (826.66 km) |
| Herndon to Pearl (Mississippi) | 849.18 mi (1,366.63 km) |
| Herndon to Pearl City (Hawaii) | 4,810.86 mi (7,742.33 km) |
| Herndon to Pearl River (New York) | 229.99 mi (370.14 km) |
| Herndon to Pearland (Texas) | 1,209.69 mi (1,946.81 km) |
| Herndon to Pebble Creek (Florida) | 799.25 mi (1,286.28 km) |
| Herndon to Pecan Grove (Texas) | 1,226.72 mi (1,974.21 km) |
| Herndon to Pecos (Texas) | 1,559.19 mi (2,509.27 km) |
| Herndon to Peekskill (New York) | 243.17 mi (391.34 km) |
| Herndon to Pekin (Illinois) | 658.69 mi (1,060.07 km) |
| Herndon to Pelham (Alabama) | 652.26 mi (1,049.71 km) |
