| Hemel Hempstead to Pottsville (Pennsylvania) | 3,532.75 mi (5,685.40 km) |
| Hemel Hempstead to Poughkeepsie (New York) | 3,396.14 mi (5,465.56 km) |
| Hemel Hempstead to Poulsbo (Washington) | 4,762.26 mi (7,664.12 km) |
| Hemel Hempstead to Poway (California) | 5,439.54 mi (8,754.10 km) |
| Hemel Hempstead to Powder Springs (Georgia) | 4,193.66 mi (6,749.05 km) |
| Hemel Hempstead to Powell (Ohio) | 3,829.92 mi (6,163.66 km) |
| Hemel Hempstead to Powell (Tennessee) | 4,062.09 mi (6,537.30 km) |
| Hemel Hempstead to Prairie Ridge (Washington) | 4,783.27 mi (7,697.94 km) |
| Hemel Hempstead to Prairie Village (Kansas) | 4,329.99 mi (6,968.44 km) |
| Hemel Hempstead to Prairieville (Louisiana) | 4,624.41 mi (7,442.27 km) |
| Hemel Hempstead to Prattville (Alabama) | 4,334.84 mi (6,976.26 km) |
| Hemel Hempstead to Preakness (New Jersey) | 3,441.07 mi (5,537.86 km) |
| Hemel Hempstead to Prescott (Arizona) | 5,197.47 mi (8,364.53 km) |
| Hemel Hempstead to Prescott Valley (Arizona) | 5,192.39 mi (8,356.35 km) |
| Hemel Hempstead to Prichard (Alabama) | 4,487.10 mi (7,221.28 km) |
