| Rock Island to Glen Burnie (Maryland) | 752.56 mi (1,211.13 km) |
| Rock Island to Glen Carbon (Illinois) | 190.04 mi (305.84 km) |
| Rock Island to Glen Cove (New York) | 881.34 mi (1,418.38 km) |
| Rock Island to Glen Ellyn (Illinois) | 132.91 mi (213.89 km) |
| Rock Island to Glen Rock (New Jersey) | 854.82 mi (1,375.70 km) |
| Rock Island to Glendale (Arizona) | 1,300.79 mi (2,093.43 km) |
| Rock Island to Glendale (California) | 1,583.50 mi (2,548.40 km) |
| Rock Island to Glendale (Wisconsin) | 177.59 mi (285.81 km) |
| Rock Island to Glendale Heights (Illinois) | 132.87 mi (213.84 km) |
| Rock Island to Glendora (California) | 1,564.24 mi (2,517.40 km) |
| Rock Island to Glenmont (Maryland) | 731.78 mi (1,177.68 km) |
| Rock Island to Glenn Dale (Maryland) | 746.00 mi (1,200.57 km) |
| Rock Island to Glenn Heights (Texas) | 706.28 mi (1,136.65 km) |
| Rock Island to Glenpool (Oklahoma) | 480.39 mi (773.11 km) |
| Rock Island to Glens Falls (New York) | 872.05 mi (1,403.43 km) |
