| Rock Island to Pottstown (Pennsylvania) | 784.15 mi (1,261.96 km) |
| Rock Island to Pottsville (Pennsylvania) | 749.79 mi (1,206.66 km) |
| Rock Island to Poughkeepsie (New York) | 859.90 mi (1,383.87 km) |
| Rock Island to Poulsbo (Washington) | 1,622.52 mi (2,611.20 km) |
| Rock Island to Poway (California) | 1,560.26 mi (2,511.00 km) |
| Rock Island to Powder Springs (Georgia) | 616.16 mi (991.61 km) |
| Rock Island to Powell (Ohio) | 402.18 mi (647.24 km) |
| Rock Island to Powell (Tennessee) | 515.09 mi (828.96 km) |
| Rock Island to Prairie Ridge (Washington) | 1,596.99 mi (2,570.10 km) |
| Rock Island to Prairie Village (Kansas) | 274.06 mi (441.06 km) |
| Rock Island to Prairieville (Louisiana) | 771.00 mi (1,240.81 km) |
| Rock Island to Prattville (Alabama) | 662.67 mi (1,066.47 km) |
| Rock Island to Preakness (New Jersey) | 849.90 mi (1,367.78 km) |
| Rock Island to Prescott (Arizona) | 1,277.10 mi (2,055.30 km) |
| Rock Island to Prescott Valley (Arizona) | 1,270.23 mi (2,044.23 km) |
