| Round Lake Beach to Petaluma (California) | 1,829.54 mi (2,944.36 km) |
| Round Lake Beach to Petersburg (Virginia) | 669.97 mi (1,078.21 km) |
| Round Lake Beach to Pflugerville (Texas) | 978.01 mi (1,573.95 km) |
| Round Lake Beach to Pharr (Texas) | 1,257.79 mi (2,024.22 km) |
| Round Lake Beach to Phelan (California) | 1,675.85 mi (2,697.02 km) |
| Round Lake Beach to Phenix City (Alabama) | 705.52 mi (1,135.43 km) |
| Round Lake Beach to Philadelphia (Pennsylvania) | 692.05 mi (1,113.74 km) |
| Round Lake Beach to Phillipsburg (New Jersey) | 676.59 mi (1,088.86 km) |
| Round Lake Beach to Phoenix (Arizona) | 1,435.60 mi (2,310.38 km) |
| Round Lake Beach to Phoenixville (Pennsylvania) | 669.90 mi (1,078.10 km) |
| Round Lake Beach to Picayune (Mississippi) | 823.26 mi (1,324.91 km) |
| Round Lake Beach to Pickerington (Ohio) | 325.56 mi (523.94 km) |
| Round Lake Beach to Pico Rivera (California) | 1,718.94 mi (2,766.36 km) |
| Round Lake Beach to Piedmont (California) | 1,819.44 mi (2,928.10 km) |
| Round Lake Beach to Pierre (South Dakota) | 629.30 mi (1,012.75 km) |
