| Philadelphia to Owosso (Michigan) | 511.06 mi (822.47 km) |
| Philadelphia to Oxford (Alabama) | 739.97 mi (1,190.87 km) |
| Philadelphia to Oxford (Mississippi) | 881.93 mi (1,419.33 km) |
| Philadelphia to Oxford (Ohio) | 511.41 mi (823.04 km) |
| Philadelphia to Oxnard (California) | 2,435.23 mi (3,919.12 km) |
| Philadelphia to Oxon Hill (Maryland) | 129.36 mi (208.19 km) |
| Philadelphia to Ozark (Alabama) | 833.84 mi (1,341.94 km) |
| Philadelphia to Ozark (Missouri) | 996.91 mi (1,604.37 km) |
| Philadelphia to Pace (Florida) | 936.97 mi (1,507.91 km) |
| Philadelphia to Pacific Grove (California) | 2,518.41 mi (4,052.99 km) |
| Philadelphia to Pacifica (California) | 2,524.29 mi (4,062.46 km) |
| Philadelphia to Paducah (Kentucky) | 756.94 mi (1,218.18 km) |
| Philadelphia to Pahrump (Nevada) | 2,217.19 mi (3,568.23 km) |
| Philadelphia to Painesville (Ohio) | 340.95 mi (548.70 km) |
| Philadelphia to Palatine (Illinois) | 687.41 mi (1,106.28 km) |
