| Rockford to Yonkers (New York) | 789.30 mi (1,270.25 km) |
| Rockford to Yorba Linda (California) | 1,655.46 mi (2,664.21 km) |
| Rockford to York (Pennsylvania) | 660.61 mi (1,063.15 km) |
| Rockford to Yorktown (Indiana) | 233.75 mi (376.19 km) |
| Rockford to Yorkville (Illinois) | 52.25 mi (84.09 km) |
| Rockford to Youngstown (Ohio) | 441.53 mi (710.57 km) |
| Rockford to Youngsville (Louisiana) | 856.02 mi (1,377.63 km) |
| Rockford to Ypsilanti (Michigan) | 278.33 mi (447.94 km) |
| Rockford to Yuba City (California) | 1,709.43 mi (2,751.06 km) |
| Rockford to Yucaipa (California) | 1,614.08 mi (2,597.61 km) |
| Rockford to Yucca Valley (California) | 1,579.96 mi (2,542.69 km) |
| Rockford to Yukon (Oklahoma) | 659.41 mi (1,061.22 km) |
| Rockford to Yulee (Florida) | 903.89 mi (1,454.67 km) |
| Rockford to Yuma (Arizona) | 1,541.39 mi (2,480.62 km) |
| Rockford to Zachary (Louisiana) | 809.53 mi (1,302.81 km) |
