| Castle Rock to Pottsville (Pennsylvania) | 1,511.45 mi (2,432.44 km) |
| Castle Rock to Poughkeepsie (New York) | 1,623.40 mi (2,612.61 km) |
| Castle Rock to Poulsbo (Washington) | 1,057.81 mi (1,702.38 km) |
| Castle Rock to Poway (California) | 808.34 mi (1,300.90 km) |
| Castle Rock to Powder Springs (Georgia) | 1,178.46 mi (1,896.55 km) |
| Castle Rock to Powell (Ohio) | 1,154.52 mi (1,858.02 km) |
| Castle Rock to Powell (Tennessee) | 1,158.72 mi (1,864.78 km) |
| Castle Rock to Prairie Ridge (Washington) | 1,018.69 mi (1,639.42 km) |
| Castle Rock to Prairie Village (Kansas) | 547.58 mi (881.24 km) |
| Castle Rock to Prairieville (Louisiana) | 1,004.34 mi (1,616.34 km) |
| Castle Rock to Prattville (Alabama) | 1,132.04 mi (1,821.85 km) |
| Castle Rock to Preakness (New Jersey) | 1,612.75 mi (2,595.47 km) |
| Castle Rock to Prescott (Arizona) | 533.76 mi (859.01 km) |
| Castle Rock to Prescott Valley (Arizona) | 527.62 mi (849.12 km) |
| Castle Rock to Prichard (Alabama) | 1,114.12 mi (1,793.00 km) |
