| Rock Island to Roy (Utah) | 1,111.21 mi (1,788.31 km) |
| Rock Island to Royal Kunia (Hawaii) | 4,103.29 mi (6,603.60 km) |
| Rock Island to Royal Oak (Michigan) | 388.06 mi (624.52 km) |
| Rock Island to Royal Palm Beach (Florida) | 1,177.83 mi (1,895.54 km) |
| Rock Island to Royse City (Texas) | 665.90 mi (1,071.66 km) |
| Rock Island to Ruskin (Florida) | 1,056.98 mi (1,701.05 km) |
| Rock Island to Russellville (Alabama) | 505.59 mi (813.67 km) |
| Rock Island to Russellville (Arkansas) | 449.72 mi (723.75 km) |
| Rock Island to Ruston (Louisiana) | 627.75 mi (1,010.26 km) |
| Rock Island to Rutherford (New Jersey) | 857.18 mi (1,379.50 km) |
| Rock Island to Rutland (Vermont) | 906.55 mi (1,458.94 km) |
| Rock Island to Sabana Grande (Puerto Rico) | 2,134.08 mi (3,434.47 km) |
| Rock Island to Sachse (Texas) | 673.03 mi (1,083.13 km) |
| Rock Island to Saco (Maine) | 1,032.21 mi (1,661.18 km) |
| Rock Island to Sacramento (California) | 1,637.75 mi (2,635.71 km) |
