| Gahanna to Oak Harbor (Washington) | 2,027.22 mi (3,262.50 km) |
| Gahanna to Oak Hills (Oregon) | 2,040.91 mi (3,284.53 km) |
| Gahanna to Oak Lawn (Illinois) | 280.78 mi (451.87 km) |
| Gahanna to Oak Park (California) | 2,005.03 mi (3,226.78 km) |
| Gahanna to Oak Park (Illinois) | 287.39 mi (462.50 km) |
| Gahanna to Oak Park (Michigan) | 169.38 mi (272.60 km) |
| Gahanna to Oak Ridge (Florida) | 802.42 mi (1,291.38 km) |
| Gahanna to Oak Ridge (New Jersey) | 444.68 mi (715.64 km) |
| Gahanna to Oak Ridge (Tennessee) | 291.19 mi (468.63 km) |
| Gahanna to Oakdale (California) | 2,033.11 mi (3,271.97 km) |
| Gahanna to Oakdale (Minnesota) | 617.53 mi (993.83 km) |
| Gahanna to Oakland (California) | 2,104.26 mi (3,386.48 km) |
| Gahanna to Oakland (New Jersey) | 457.96 mi (737.01 km) |
| Gahanna to Oakland Park (Florida) | 969.38 mi (1,560.07 km) |
| Gahanna to Oakleaf Plantation (Florida) | 683.47 mi (1,099.93 km) |
