| Rock Island to Jacksonville (North Carolina) | 853.58 mi (1,373.71 km) |
| Rock Island to Jacksonville (Texas) | 705.76 mi (1,135.81 km) |
| Rock Island to Jacksonville Beach (Florida) | 927.17 mi (1,492.13 km) |
| Rock Island to James Island (South Carolina) | 840.26 mi (1,352.26 km) |
| Rock Island to Jamestown (New York) | 585.72 mi (942.63 km) |
| Rock Island to Jamestown (North Dakota) | 549.52 mi (884.37 km) |
| Rock Island to Janesville (Wisconsin) | 116.31 mi (187.18 km) |
| Rock Island to Jasmine Estates (Florida) | 1,013.27 mi (1,630.69 km) |
| Rock Island to Jasper (Alabama) | 556.60 mi (895.76 km) |
| Rock Island to Jasper (Indiana) | 287.05 mi (461.96 km) |
| Rock Island to Jefferson (Georgia) | 633.46 mi (1,019.46 km) |
| Rock Island to Jefferson (Louisiana) | 795.55 mi (1,280.32 km) |
| Rock Island to Jefferson City (Missouri) | 217.52 mi (350.06 km) |
| Rock Island to Jefferson Hills (Pennsylvania) | 561.88 mi (904.26 km) |
| Rock Island to Jefferson Valley-Yorktown (New York) | 868.54 mi (1,397.79 km) |
