| Blackrock to Oak Harbor (Washington) | 4,495.97 mi (7,235.56 km) |
| Blackrock to Oak Hills (Oregon) | 4,656.25 mi (7,493.51 km) |
| Blackrock to Oak Lawn (Illinois) | 3,676.47 mi (5,916.70 km) |
| Blackrock to Oak Park (California) | 5,174.66 mi (8,327.81 km) |
| Blackrock to Oak Park (Illinois) | 3,669.81 mi (5,905.99 km) |
| Blackrock to Oak Park (Michigan) | 3,466.71 mi (5,579.12 km) |
| Blackrock to Oak Ridge (Florida) | 4,071.64 mi (6,552.68 km) |
| Blackrock to Oak Ridge (New Jersey) | 3,187.94 mi (5,130.50 km) |
| Blackrock to Oak Ridge (Tennessee) | 3,815.08 mi (6,139.77 km) |
| Blackrock to Oakdale (California) | 5,037.84 mi (8,107.62 km) |
| Blackrock to Oakdale (Minnesota) | 3,717.62 mi (5,982.93 km) |
| Blackrock to Oakland (California) | 5,078.40 mi (8,172.90 km) |
| Blackrock to Oakland (New Jersey) | 3,177.69 mi (5,114.00 km) |
| Blackrock to Oakland Park (Florida) | 4,137.50 mi (6,658.66 km) |
| Blackrock to Oakleaf Plantation (Florida) | 4,002.65 mi (6,441.63 km) |
