| Hilo to Oak Harbor (Washington) | 2,676.04 mi (4,306.67 km) |
| Hilo to Oak Hills (Oregon) | 2,559.21 mi (4,118.65 km) |
| Hilo to Oak Lawn (Illinois) | 4,168.28 mi (6,708.20 km) |
| Hilo to Oak Park (California) | 2,434.11 mi (3,917.32 km) |
| Hilo to Oak Park (Illinois) | 4,166.25 mi (6,704.93 km) |
| Hilo to Oak Park (Michigan) | 4,400.69 mi (7,082.23 km) |
| Hilo to Oak Ridge (Florida) | 4,618.05 mi (7,432.03 km) |
| Hilo to Oak Ridge (New Jersey) | 4,856.38 mi (7,815.59 km) |
| Hilo to Oak Ridge (Tennessee) | 4,376.93 mi (7,043.99 km) |
| Hilo to Oakdale (California) | 2,400.91 mi (3,863.89 km) |
| Hilo to Oakdale (Minnesota) | 3,915.11 mi (6,300.75 km) |
| Hilo to Oakland (California) | 2,332.50 mi (3,753.79 km) |
| Hilo to Oakland (New Jersey) | 4,869.57 mi (7,836.81 km) |
| Hilo to Oakland Park (Florida) | 4,725.37 mi (7,604.75 km) |
| Hilo to Oakleaf Plantation (Florida) | 4,572.58 mi (7,358.85 km) |
