| Rock Island to Springfield (Missouri) | 328.93 mi (529.37 km) |
| Rock Island to Springfield (Ohio) | 370.97 mi (597.02 km) |
| Rock Island to Springfield (Oregon) | 1,642.46 mi (2,643.28 km) |
| Rock Island to Springfield (Tennessee) | 397.26 mi (639.33 km) |
| Rock Island to Springfield (Virginia) | 731.00 mi (1,176.43 km) |
| Rock Island to Springville (Utah) | 1,101.04 mi (1,771.94 km) |
| Rock Island to St. Albans (West Virginia) | 510.82 mi (822.08 km) |
| Rock Island to St. Andrews (South Carolina) | 727.64 mi (1,171.02 km) |
| Rock Island to St. Ann (Missouri) | 189.82 mi (305.49 km) |
| Rock Island to St. Augustine (Florida) | 952.66 mi (1,533.16 km) |
| Rock Island to St. Charles (Illinois) | 121.25 mi (195.13 km) |
| Rock Island to St. Charles (Missouri) | 184.82 mi (297.45 km) |
| Rock Island to St. Clair Shores (Michigan) | 400.92 mi (645.22 km) |
| Rock Island to St. Cloud (Florida) | 1,054.10 mi (1,696.41 km) |
| Rock Island to St. Cloud (Minnesota) | 333.39 mi (536.54 km) |
