| Rockford to Abilene (Texas) | 894.42 mi (1,439.43 km) |
| Rockford to Accokeek (Maryland) | 679.92 mi (1,094.23 km) |
| Rockford to Acworth (Georgia) | 614.73 mi (989.31 km) |
| Rockford to Ada (Oklahoma) | 660.51 mi (1,062.98 km) |
| Rockford to Addison (Illinois) | 58.68 mi (94.43 km) |
| Rockford to Addison (Texas) | 769.86 mi (1,238.96 km) |
| Rockford to Adelanto (California) | 1,616.12 mi (2,600.89 km) |
| Rockford to Adelphi (Maryland) | 672.45 mi (1,082.21 km) |
| Rockford to Adrian (Michigan) | 258.56 mi (416.12 km) |
| Rockford to Affton (Missouri) | 264.77 mi (426.11 km) |
| Rockford to Agoura Hills (California) | 1,696.63 mi (2,730.46 km) |
| Rockford to Aguadilla (Puerto Rico) | 2,088.03 mi (3,360.37 km) |
| Rockford to Aiken (South Carolina) | 723.08 mi (1,163.69 km) |
| Rockford to Akron (Ohio) | 397.56 mi (639.81 km) |
| Rockford to Alabaster (Alabama) | 636.41 mi (1,024.21 km) |
