| Romeoville to Prichard (Alabama) | 750.24 mi (1,207.39 km) |
| Romeoville to Princeton (Florida) | 1,195.70 mi (1,924.29 km) |
| Romeoville to Princeton (New Jersey) | 705.19 mi (1,134.89 km) |
| Romeoville to Princeton (Texas) | 743.49 mi (1,196.53 km) |
| Romeoville to Princeton Meadows (New Jersey) | 710.86 mi (1,144.02 km) |
| Romeoville to Prineville (Oregon) | 1,655.50 mi (2,664.27 km) |
| Romeoville to Prior Lake (Minnesota) | 343.55 mi (552.89 km) |
| Romeoville to Progress (Pennsylvania) | 594.34 mi (956.50 km) |
| Romeoville to Prospect Heights (Illinois) | 33.81 mi (54.41 km) |
| Romeoville to Prosper (Texas) | 750.49 mi (1,207.80 km) |
| Romeoville to Providence (Rhode Island) | 858.92 mi (1,382.29 km) |
| Romeoville to Provo (Utah) | 1,228.85 mi (1,977.64 km) |
| Romeoville to Prunedale (California) | 1,815.03 mi (2,921.00 km) |
| Romeoville to Pueblo (Colorado) | 903.30 mi (1,453.72 km) |
| Romeoville to Pueblo West (Colorado) | 907.27 mi (1,460.11 km) |
