| Romeoville to Pelham (Alabama) | 579.55 mi (932.70 km) |
| Romeoville to Pell City (Alabama) | 566.55 mi (911.78 km) |
| Romeoville to Pella (Iowa) | 249.77 mi (401.97 km) |
| Romeoville to Pembroke Pines (Florida) | 1,166.23 mi (1,876.87 km) |
| Romeoville to Pendleton (Oregon) | 1,551.03 mi (2,496.14 km) |
| Romeoville to Pensacola (Florida) | 774.84 mi (1,246.98 km) |
| Romeoville to Peoria (Arizona) | 1,423.47 mi (2,290.86 km) |
| Romeoville to Peoria (Illinois) | 99.52 mi (160.17 km) |
| Romeoville to Perris (California) | 1,672.12 mi (2,691.01 km) |
| Romeoville to Perry (Georgia) | 676.98 mi (1,089.49 km) |
| Romeoville to Perry Hall (Maryland) | 628.93 mi (1,012.16 km) |
| Romeoville to Perrysburg (Ohio) | 230.48 mi (370.92 km) |
| Romeoville to Perth Amboy (New Jersey) | 723.49 mi (1,164.35 km) |
| Romeoville to Peru (Indiana) | 121.27 mi (195.17 km) |
| Romeoville to Petal (Mississippi) | 713.34 mi (1,148.01 km) |
