| Rock Island to Oak Grove (South Carolina) | 729.79 mi (1,174.48 km) |
| Rock Island to Oak Harbor (Washington) | 1,624.98 mi (2,615.16 km) |
| Rock Island to Oak Hills (Oregon) | 1,629.53 mi (2,622.48 km) |
| Rock Island to Oak Lawn (Illinois) | 147.19 mi (236.89 km) |
| Rock Island to Oak Park (California) | 1,609.99 mi (2,591.02 km) |
| Rock Island to Oak Park (Illinois) | 146.97 mi (236.53 km) |
| Rock Island to Oak Park (Michigan) | 386.21 mi (621.54 km) |
| Rock Island to Oak Ridge (Florida) | 1,035.71 mi (1,666.82 km) |
| Rock Island to Oak Ridge (New Jersey) | 834.93 mi (1,343.69 km) |
| Rock Island to Oak Ridge (Tennessee) | 509.28 mi (819.60 km) |
| Rock Island to Oakdale (California) | 1,622.57 mi (2,611.28 km) |
| Rock Island to Oakdale (Minnesota) | 270.98 mi (436.10 km) |
| Rock Island to Oakland (California) | 1,692.84 mi (2,724.35 km) |
| Rock Island to Oakland (New Jersey) | 848.18 mi (1,365.02 km) |
| Rock Island to Oakland Park (Florida) | 1,212.20 mi (1,950.84 km) |
