| Rockford to Ashtabula (Ohio) | 424.58 mi (683.30 km) |
| Rockford to Ashwaubenon (Wisconsin) | 161.01 mi (259.13 km) |
| Rockford to Aspen Hill (Maryland) | 664.17 mi (1,068.88 km) |
| Rockford to Astoria (Oregon) | 1,727.30 mi (2,779.83 km) |
| Rockford to Atascadero (California) | 1,753.13 mi (2,821.39 km) |
| Rockford to Atascocita (Texas) | 914.34 mi (1,471.49 km) |
| Rockford to Atchison (Kansas) | 367.66 mi (591.69 km) |
| Rockford to Athens (Alabama) | 528.93 mi (851.23 km) |
| Rockford to Athens (Georgia) | 651.87 mi (1,049.08 km) |
| Rockford to Athens (Ohio) | 416.70 mi (670.62 km) |
| Rockford to Athens (Tennessee) | 527.50 mi (848.92 km) |
| Rockford to Athens (Texas) | 787.59 mi (1,267.50 km) |
| Rockford to Atlanta (Georgia) | 638.88 mi (1,028.18 km) |
| Rockford to Atlantic Beach (Florida) | 926.42 mi (1,490.93 km) |
| Rockford to Atlantic City (New Jersey) | 788.37 mi (1,268.76 km) |
