| Middlesex to Parma Heights (Ohio) | 382.84 mi (616.12 km) |
| Middlesex to Parole (Maryland) | 154.58 mi (248.77 km) |
| Middlesex to Parsippany (New Jersey) | 20.56 mi (33.09 km) |
| Middlesex to Pasadena (California) | 2,411.79 mi (3,881.40 km) |
| Middlesex to Pasadena (Maryland) | 146.50 mi (235.77 km) |
| Middlesex to Pasadena (Texas) | 1,384.08 mi (2,227.47 km) |
| Middlesex to Pasadena Hills (Florida) | 955.59 mi (1,537.87 km) |
| Middlesex to Pascagoula (Mississippi) | 1,056.98 mi (1,701.04 km) |
| Middlesex to Pasco (Washington) | 2,243.61 mi (3,610.75 km) |
| Middlesex to Passaic (New Jersey) | 27.64 mi (44.47 km) |
| Middlesex to Pataskala (Ohio) | 434.49 mi (699.25 km) |
| Middlesex to Patchogue (New York) | 78.77 mi (126.77 km) |
| Middlesex to Paterson (New Jersey) | 29.45 mi (47.39 km) |
| Middlesex to Patterson (California) | 2,484.01 mi (3,997.63 km) |
| Middlesex to Pawtucket (Rhode Island) | 185.65 mi (298.77 km) |
