| Frederick to Oak Harbor (Washington) | 2,298.20 mi (3,698.59 km) |
| Frederick to Oak Hills (Oregon) | 2,320.84 mi (3,735.04 km) |
| Frederick to Oak Lawn (Illinois) | 564.59 mi (908.61 km) |
| Frederick to Oak Park (California) | 2,295.83 mi (3,694.79 km) |
| Frederick to Oak Park (Illinois) | 569.21 mi (916.05 km) |
| Frederick to Oak Park (Michigan) | 366.57 mi (589.94 km) |
| Frederick to Oak Ridge (Florida) | 791.07 mi (1,273.11 km) |
| Frederick to Oak Ridge (New Jersey) | 189.39 mi (304.79 km) |
| Frederick to Oak Ridge (Tennessee) | 445.81 mi (717.46 km) |
| Frederick to Oakdale (California) | 2,325.39 mi (3,742.36 km) |
| Frederick to Oakdale (Minnesota) | 881.50 mi (1,418.65 km) |
| Frederick to Oakland (California) | 2,396.44 mi (3,856.69 km) |
| Frederick to Oakland (New Jersey) | 200.48 mi (322.65 km) |
| Frederick to Oakland Park (Florida) | 929.45 mi (1,495.80 km) |
| Frederick to Oakleaf Plantation (Florida) | 687.24 mi (1,106.01 km) |
