| Rockford to Prichard (Alabama) | 795.29 mi (1,279.90 km) |
| Rockford to Princeton (Florida) | 1,255.92 mi (2,021.20 km) |
| Rockford to Princeton (New Jersey) | 757.63 mi (1,219.28 km) |
| Rockford to Princeton (Texas) | 747.03 mi (1,202.23 km) |
| Rockford to Princeton Meadows (New Jersey) | 763.31 mi (1,228.43 km) |
| Rockford to Prineville (Oregon) | 1,595.56 mi (2,567.80 km) |
| Rockford to Prior Lake (Minnesota) | 277.71 mi (446.93 km) |
| Rockford to Progress (Pennsylvania) | 648.60 mi (1,043.82 km) |
| Rockford to Prospect Heights (Illinois) | 59.21 mi (95.30 km) |
| Rockford to Prosper (Texas) | 752.53 mi (1,211.08 km) |
| Rockford to Providence (Rhode Island) | 904.32 mi (1,455.36 km) |
| Rockford to Provo (Utah) | 1,177.73 mi (1,895.37 km) |
| Rockford to Prunedale (California) | 1,765.76 mi (2,841.72 km) |
| Rockford to Pueblo (Colorado) | 863.31 mi (1,389.37 km) |
| Rockford to Pueblo West (Colorado) | 866.86 mi (1,395.07 km) |
