| Walnut Creek to Oak Grove (South Carolina) | 2,285.28 mi (3,677.80 km) |
| Walnut Creek to Oak Harbor (Washington) | 718.77 mi (1,156.75 km) |
| Walnut Creek to Oak Hills (Oregon) | 529.35 mi (851.91 km) |
| Walnut Creek to Oak Lawn (Illinois) | 1,826.55 mi (2,939.55 km) |
| Walnut Creek to Oak Park (California) | 315.23 mi (507.32 km) |
| Walnut Creek to Oak Park (Illinois) | 1,824.01 mi (2,935.47 km) |
| Walnut Creek to Oak Park (Michigan) | 2,056.94 mi (3,310.32 km) |
| Walnut Creek to Oak Ridge (Florida) | 2,417.02 mi (3,889.82 km) |
| Walnut Creek to Oak Ridge (New Jersey) | 2,513.71 mi (4,045.43 km) |
| Walnut Creek to Oak Ridge (Tennessee) | 2,074.76 mi (3,339.01 km) |
| Walnut Creek to Oakdale (California) | 65.83 mi (105.94 km) |
| Walnut Creek to Oakdale (Minnesota) | 1,573.58 mi (2,532.42 km) |
| Walnut Creek to Oakland (California) | 12.36 mi (19.90 km) |
| Walnut Creek to Oakland (New Jersey) | 2,526.84 mi (4,066.55 km) |
| Walnut Creek to Oakland Park (Florida) | 2,559.42 mi (4,118.99 km) |
