| Middlesex to Pell City (Alabama) | 808.46 mi (1,301.10 km) |
| Middlesex to Pella (Iowa) | 960.45 mi (1,545.70 km) |
| Middlesex to Pembroke Pines (Florida) | 1,060.41 mi (1,706.56 km) |
| Middlesex to Pendleton (Oregon) | 2,233.44 mi (3,594.38 km) |
| Middlesex to Pensacola (Florida) | 997.77 mi (1,605.75 km) |
| Middlesex to Peoria (Arizona) | 2,115.94 mi (3,405.27 km) |
| Middlesex to Peoria (Illinois) | 791.27 mi (1,273.43 km) |
| Middlesex to Perris (California) | 2,374.14 mi (3,820.82 km) |
| Middlesex to Perry (Georgia) | 757.98 mi (1,219.84 km) |
| Middlesex to Perry Hall (Maryland) | 132.13 mi (212.64 km) |
| Middlesex to Perrysburg (Ohio) | 480.61 mi (773.46 km) |
| Middlesex to Perth Amboy (New Jersey) | 12.58 mi (20.24 km) |
| Middlesex to Peru (Indiana) | 606.29 mi (975.73 km) |
| Middlesex to Petal (Mississippi) | 1,039.41 mi (1,672.77 km) |
| Middlesex to Petaluma (California) | 2,542.07 mi (4,091.07 km) |
