| Rock Island to St. George (Utah) | 1,262.62 mi (2,031.99 km) |
| Rock Island to St. Helens (Oregon) | 1,627.84 mi (2,619.76 km) |
| Rock Island to St. James (New York) | 905.93 mi (1,457.95 km) |
| Rock Island to St. John (Indiana) | 161.20 mi (259.43 km) |
| Rock Island to St. Joseph (Missouri) | 251.70 mi (405.08 km) |
| Rock Island to St. Louis (Missouri) | 196.62 mi (316.43 km) |
| Rock Island to St. Louis Park (Minnesota) | 278.18 mi (447.69 km) |
| Rock Island to St. Marys (Georgia) | 893.73 mi (1,438.33 km) |
| Rock Island to St. Marys (Pennsylvania) | 623.33 mi (1,003.15 km) |
| Rock Island to St. Matthews (Kentucky) | 343.80 mi (553.29 km) |
| Rock Island to St. Michael (Minnesota) | 301.42 mi (485.09 km) |
| Rock Island to St. Paul (Minnesota) | 271.74 mi (437.33 km) |
| Rock Island to St. Peter (Minnesota) | 261.40 mi (420.69 km) |
| Rock Island to St. Peters (Missouri) | 185.69 mi (298.83 km) |
| Rock Island to St. Petersburg (Florida) | 1,045.53 mi (1,682.62 km) |
