| Williamsport to Owosso (Michigan) | 385.32 mi (620.11 km) |
| Williamsport to Oxford (Alabama) | 715.98 mi (1,152.26 km) |
| Williamsport to Oxford (Mississippi) | 830.04 mi (1,335.82 km) |
| Williamsport to Oxford (Ohio) | 422.86 mi (680.53 km) |
| Williamsport to Oxnard (California) | 2,330.61 mi (3,750.76 km) |
| Williamsport to Oxon Hill (Maryland) | 169.42 mi (272.65 km) |
| Williamsport to Ozark (Alabama) | 827.92 mi (1,332.41 km) |
| Williamsport to Ozark (Missouri) | 912.73 mi (1,468.90 km) |
| Williamsport to Pace (Florida) | 925.77 mi (1,489.89 km) |
| Williamsport to Pacific Grove (California) | 2,406.84 mi (3,873.43 km) |
| Williamsport to Pacifica (California) | 2,410.54 mi (3,879.39 km) |
| Williamsport to Paducah (Kentucky) | 684.58 mi (1,101.73 km) |
| Williamsport to Pahrump (Nevada) | 2,110.33 mi (3,396.25 km) |
| Williamsport to Painesville (Ohio) | 220.79 mi (355.32 km) |
| Williamsport to Palatine (Illinois) | 570.79 mi (918.59 km) |
