| Rock Island to Saddlebrooke (Arizona) | 1,273.10 mi (2,048.86 km) |
| Rock Island to Safety Harbor (Florida) | 1,031.15 mi (1,659.47 km) |
| Rock Island to Saginaw (Michigan) | 363.89 mi (585.62 km) |
| Rock Island to Saginaw (Texas) | 701.50 mi (1,128.96 km) |
| Rock Island to Sahuarita (Arizona) | 1,302.49 mi (2,096.16 km) |
| Rock Island to Saks (Alabama) | 595.04 mi (957.62 km) |
| Rock Island to Salem (Massachusetts) | 1,010.95 mi (1,626.97 km) |
| Rock Island to Salem (Ohio) | 507.34 mi (816.49 km) |
| Rock Island to Salem (Oregon) | 1,640.24 mi (2,639.70 km) |
| Rock Island to Salem (Virginia) | 631.56 mi (1,016.40 km) |
| Rock Island to Salem Lakes (Wisconsin) | 145.88 mi (234.77 km) |
| Rock Island to Salida (California) | 1,636.04 mi (2,632.96 km) |
| Rock Island to Salina (Kansas) | 414.09 mi (666.42 km) |
| Rock Island to Salinas (California) | 1,688.29 mi (2,717.04 km) |
| Rock Island to Salisbury (Maryland) | 821.69 mi (1,322.38 km) |
