| Rock Island to Rosemont (California) | 1,632.30 mi (2,626.94 km) |
| Rock Island to Rosemount (Minnesota) | 258.71 mi (416.36 km) |
| Rock Island to Rosenberg (Texas) | 874.54 mi (1,407.44 km) |
| Rock Island to Roseville (California) | 1,626.04 mi (2,616.86 km) |
| Rock Island to Roseville (Michigan) | 399.00 mi (642.12 km) |
| Rock Island to Roseville (Minnesota) | 277.04 mi (445.84 km) |
| Rock Island to Rossmoor (California) | 1,587.41 mi (2,554.69 km) |
| Rock Island to Rossville (Maryland) | 755.38 mi (1,215.67 km) |
| Rock Island to Roswell (Georgia) | 615.61 mi (990.73 km) |
| Rock Island to Roswell (New Mexico) | 945.99 mi (1,522.42 km) |
| Rock Island to Round Lake (Illinois) | 140.93 mi (226.81 km) |
| Rock Island to Round Lake Beach (Illinois) | 143.12 mi (230.32 km) |
| Rock Island to Round Rock (Texas) | 852.67 mi (1,372.24 km) |
| Rock Island to Rowland Heights (California) | 1,571.96 mi (2,529.83 km) |
| Rock Island to Rowlett (Texas) | 675.72 mi (1,087.46 km) |
