| Rock Island to Rockville (Maryland) | 725.94 mi (1,168.29 km) |
| Rock Island to Rockville Centre (New York) | 883.01 mi (1,421.07 km) |
| Rock Island to Rockwall (Texas) | 672.69 mi (1,082.58 km) |
| Rock Island to Rocky Mount (North Carolina) | 785.62 mi (1,264.33 km) |
| Rock Island to Rocky Point (New York) | 916.49 mi (1,474.94 km) |
| Rock Island to Rocky River (Ohio) | 451.79 mi (727.08 km) |
| Rock Island to Roessleville (New York) | 863.51 mi (1,389.69 km) |
| Rock Island to Rogers (Arkansas) | 404.41 mi (650.83 km) |
| Rock Island to Rogers (Minnesota) | 297.62 mi (478.98 km) |
| Rock Island to Rohnert Park (California) | 1,705.71 mi (2,745.08 km) |
| Rock Island to Rolla (Missouri) | 251.40 mi (404.59 km) |
| Rock Island to Rolling Meadows (Illinois) | 138.25 mi (222.49 km) |
| Rock Island to Roma (Texas) | 1,145.24 mi (1,843.09 km) |
| Rock Island to Rome (Georgia) | 577.95 mi (930.12 km) |
| Rock Island to Rome (New York) | 779.04 mi (1,253.75 km) |
