| Middlesex to Petersburg (Virginia) | 279.92 mi (450.49 km) |
| Middlesex to Pflugerville (Texas) | 1,469.08 mi (2,364.26 km) |
| Middlesex to Pharr (Texas) | 1,681.74 mi (2,706.49 km) |
| Middlesex to Phelan (California) | 2,371.93 mi (3,817.25 km) |
| Middlesex to Phenix City (Alabama) | 808.78 mi (1,301.60 km) |
| Middlesex to Philadelphia (Pennsylvania) | 51.43 mi (82.77 km) |
| Middlesex to Phillipsburg (New Jersey) | 36.58 mi (58.87 km) |
| Middlesex to Phoenix (Arizona) | 2,110.92 mi (3,397.20 km) |
| Middlesex to Phoenixville (Pennsylvania) | 61.62 mi (99.16 km) |
| Middlesex to Picayune (Mississippi) | 1,096.61 mi (1,764.83 km) |
| Middlesex to Pickerington (Ohio) | 438.45 mi (705.62 km) |
| Middlesex to Pico Rivera (California) | 2,413.88 mi (3,884.77 km) |
| Middlesex to Piedmont (California) | 2,531.36 mi (4,073.84 km) |
| Middlesex to Pierre (South Dakota) | 1,335.88 mi (2,149.89 km) |
| Middlesex to Pike Creek Valley (Delaware) | 86.08 mi (138.53 km) |
