| Rock Island to Stephenville (Texas) | 765.60 mi (1,232.12 km) |
| Rock Island to Sterling (Colorado) | 659.12 mi (1,060.75 km) |
| Rock Island to Sterling (Illinois) | 51.16 mi (82.34 km) |
| Rock Island to Sterling (Virginia) | 714.82 mi (1,150.38 km) |
| Rock Island to Sterling Heights (Michigan) | 395.01 mi (635.70 km) |
| Rock Island to Steubenville (Ohio) | 523.78 mi (842.94 km) |
| Rock Island to Stevens Point (Wisconsin) | 217.37 mi (349.82 km) |
| Rock Island to Stevenson Ranch (California) | 1,594.58 mi (2,566.23 km) |
| Rock Island to Stillwater (Minnesota) | 272.44 mi (438.44 km) |
| Rock Island to Stillwater (Oklahoma) | 507.85 mi (817.30 km) |
| Rock Island to Stockbridge (Georgia) | 649.62 mi (1,045.46 km) |
| Rock Island to Stockton (California) | 1,641.91 mi (2,642.40 km) |
| Rock Island to Stone Ridge (Virginia) | 708.76 mi (1,140.65 km) |
| Rock Island to Stonecrest (Georgia) | 642.94 mi (1,034.71 km) |
| Rock Island to Stony Brook (New York) | 906.89 mi (1,459.49 km) |
