| Rock Island to Reedley (California) | 1,577.47 mi (2,538.70 km) |
| Rock Island to Reidsville (North Carolina) | 684.68 mi (1,101.88 km) |
| Rock Island to Reisterstown (Maryland) | 736.23 mi (1,184.84 km) |
| Rock Island to Rendon (Texas) | 715.01 mi (1,150.70 km) |
| Rock Island to Reno (Nevada) | 1,535.72 mi (2,471.50 km) |
| Rock Island to Renton (Washington) | 1,600.56 mi (2,575.86 km) |
| Rock Island to Republic (Missouri) | 335.65 mi (540.17 km) |
| Rock Island to Reston (Virginia) | 719.01 mi (1,157.14 km) |
| Rock Island to Revere (Massachusetts) | 1,006.07 mi (1,619.12 km) |
| Rock Island to Rexburg (Idaho) | 1,087.00 mi (1,749.35 km) |
| Rock Island to Reynoldsburg (Ohio) | 420.87 mi (677.32 km) |
| Rock Island to Rialto (California) | 1,541.79 mi (2,481.27 km) |
| Rock Island to Richardson (Texas) | 676.60 mi (1,088.89 km) |
| Rock Island to Richfield (Minnesota) | 271.82 mi (437.45 km) |
| Rock Island to Richfield (Wisconsin) | 170.88 mi (275.00 km) |
