| Prospect Heights to Petaluma (California) | 1,838.44 mi (2,958.68 km) |
| Prospect Heights to Petersburg (Virginia) | 654.02 mi (1,052.55 km) |
| Prospect Heights to Pflugerville (Texas) | 967.34 mi (1,556.78 km) |
| Prospect Heights to Pharr (Texas) | 1,245.47 mi (2,004.39 km) |
| Prospect Heights to Phelan (California) | 1,680.70 mi (2,704.83 km) |
| Prospect Heights to Phenix City (Alabama) | 685.13 mi (1,102.62 km) |
| Prospect Heights to Philadelphia (Pennsylvania) | 681.37 mi (1,096.56 km) |
| Prospect Heights to Phillipsburg (New Jersey) | 667.10 mi (1,073.60 km) |
| Prospect Heights to Phoenix (Arizona) | 1,437.70 mi (2,313.76 km) |
| Prospect Heights to Phoenixville (Pennsylvania) | 659.29 mi (1,061.03 km) |
| Prospect Heights to Picayune (Mississippi) | 805.36 mi (1,296.10 km) |
| Prospect Heights to Pickerington (Ohio) | 309.43 mi (497.97 km) |
| Prospect Heights to Pico Rivera (California) | 1,723.64 mi (2,773.93 km) |
| Prospect Heights to Piedmont (California) | 1,827.97 mi (2,941.83 km) |
| Prospect Heights to Pierre (South Dakota) | 642.56 mi (1,034.11 km) |
