| Rockford to Keene (New Hampshire) | 852.47 mi (1,371.92 km) |
| Rockford to Keizer (Oregon) | 1,696.32 mi (2,729.96 km) |
| Rockford to Keller (Texas) | 783.26 mi (1,260.53 km) |
| Rockford to Kelso (Washington) | 1,683.87 mi (2,709.93 km) |
| Rockford to Kemp Mill (Maryland) | 668.58 mi (1,075.98 km) |
| Rockford to Ken Caryl (Colorado) | 856.85 mi (1,378.96 km) |
| Rockford to Kendale Lakes (Florida) | 1,244.81 mi (2,003.33 km) |
| Rockford to Kendall (Florida) | 1,248.46 mi (2,009.20 km) |
| Rockford to Kendall Park (New Jersey) | 762.04 mi (1,226.39 km) |
| Rockford to Kendall West (Florida) | 1,244.22 mi (2,002.38 km) |
| Rockford to Kenmore (New York) | 520.25 mi (837.27 km) |
| Rockford to Kenmore (Washington) | 1,651.33 mi (2,657.56 km) |
| Rockford to Kenner (Louisiana) | 848.88 mi (1,366.14 km) |
| Rockford to Kennesaw (Georgia) | 617.83 mi (994.30 km) |
| Rockford to Kennett (Missouri) | 419.20 mi (674.64 km) |
