| Herndon to Piazza Armerina | 4,748.04 mi (7,641.24 km) |
| Herndon to Piazzola sul Brenta | 4,340.05 mi (6,984.64 km) |
| Herndon to Pietrasanta | 4,326.85 mi (6,963.39 km) |
| Herndon to Pieve di Soligo | 4,345.15 mi (6,992.84 km) |
| Herndon to Pinerolo | 4,170.53 mi (6,711.82 km) |
| Herndon to Pioltello | 4,237.55 mi (6,819.68 km) |
| Herndon to Piombino | 4,374.29 mi (7,039.74 km) |
| Herndon to Piombino Dese | 4,347.35 mi (6,996.39 km) |
| Herndon to Piossasco | 4,173.03 mi (6,715.84 km) |
| Herndon to Piove di Sacco | 4,359.43 mi (7,015.82 km) |
| Herndon to Pisa | 4,342.44 mi (6,988.48 km) |
| Herndon to Pisticci | 4,731.57 mi (7,614.72 km) |
| Herndon to Pistoia | 4,357.59 mi (7,012.87 km) |
| Herndon to Pizzo | 4,777.82 mi (7,689.16 km) |
| Herndon to Podenzano | 4,270.44 mi (6,872.61 km) |
