| Healdsburg to Oak Harbor (Washington) | 668.51 mi (1,075.86 km) |
| Healdsburg to Oak Hills (Oregon) | 478.00 mi (769.26 km) |
| Healdsburg to Oak Lawn (Illinois) | 1,853.18 mi (2,982.41 km) |
| Healdsburg to Oak Park (California) | 381.92 mi (614.64 km) |
| Healdsburg to Oak Park (Illinois) | 1,850.24 mi (2,977.67 km) |
| Healdsburg to Oak Park (Michigan) | 2,081.23 mi (3,349.41 km) |
| Healdsburg to Oak Ridge (Florida) | 2,464.82 mi (3,966.74 km) |
| Healdsburg to Oak Ridge (New Jersey) | 2,538.89 mi (4,085.95 km) |
| Healdsburg to Oak Ridge (Tennessee) | 2,112.52 mi (3,399.78 km) |
| Healdsburg to Oakdale (California) | 124.69 mi (200.66 km) |
| Healdsburg to Oakdale (Minnesota) | 1,591.40 mi (2,561.11 km) |
| Healdsburg to Oakland (California) | 67.41 mi (108.49 km) |
| Healdsburg to Oakland (New Jersey) | 2,551.94 mi (4,106.95 km) |
| Healdsburg to Oakland Park (Florida) | 2,609.23 mi (4,199.15 km) |
| Healdsburg to Oakleaf Plantation (Florida) | 2,390.11 mi (3,846.51 km) |
