| River Grove to Pottstown (Pennsylvania) | 644.84 mi (1,037.77 km) |
| River Grove to Pottsville (Pennsylvania) | 609.21 mi (980.43 km) |
| River Grove to Poughkeepsie (New York) | 716.10 mi (1,152.45 km) |
| River Grove to Poulsbo (Washington) | 1,736.28 mi (2,794.28 km) |
| River Grove to Poway (California) | 1,705.30 mi (2,744.41 km) |
| River Grove to Powder Springs (Georgia) | 582.61 mi (937.62 km) |
| River Grove to Powell (Ohio) | 275.81 mi (443.88 km) |
| River Grove to Powell (Tennessee) | 455.25 mi (732.66 km) |
| River Grove to Prairie Ridge (Washington) | 1,712.97 mi (2,756.77 km) |
| River Grove to Prairie Village (Kansas) | 410.81 mi (661.14 km) |
| River Grove to Prairieville (Louisiana) | 820.63 mi (1,320.67 km) |
| River Grove to Prattville (Alabama) | 658.31 mi (1,059.45 km) |
| River Grove to Preakness (New Jersey) | 707.76 mi (1,139.02 km) |
| River Grove to Prescott (Arizona) | 1,422.10 mi (2,288.66 km) |
| River Grove to Prescott Valley (Arizona) | 1,415.22 mi (2,277.58 km) |
