| Rockford to Ukiah (California) | 1,789.38 mi (2,879.72 km) |
| Rockford to Union (Missouri) | 282.76 mi (455.06 km) |
| Rockford to Union City (California) | 1,763.96 mi (2,838.81 km) |
| Rockford to Union City (Georgia) | 646.77 mi (1,040.87 km) |
| Rockford to Union City (New Jersey) | 783.45 mi (1,260.84 km) |
| Rockford to Union City (Tennessee) | 403.02 mi (648.59 km) |
| Rockford to Union Hill-Novelty Hill (Washington) | 1,641.00 mi (2,640.93 km) |
| Rockford to Union Park (Florida) | 1,042.64 mi (1,677.97 km) |
| Rockford to Uniondale (New York) | 806.56 mi (1,298.03 km) |
| Rockford to Universal City (Texas) | 1,017.57 mi (1,637.63 km) |
| Rockford to University (Florida) | 1,048.16 mi (1,686.85 km) |
| Rockford to University City (Missouri) | 257.09 mi (413.75 km) |
| Rockford to University Heights (Ohio) | 390.79 mi (628.91 km) |
| Rockford to University of California-Santa Barbara (California) | 1,743.56 mi (2,805.99 km) |
| Rockford to University Park (Texas) | 775.03 mi (1,247.29 km) |
