| Rockford to Arcata (California) | 1,799.90 mi (2,896.66 km) |
| Rockford to Archdale (North Carolina) | 656.06 mi (1,055.83 km) |
| Rockford to Arden-Arcade (California) | 1,708.08 mi (2,748.89 km) |
| Rockford to Ardmore (Oklahoma) | 707.76 mi (1,139.03 km) |
| Rockford to Ardmore (Pennsylvania) | 732.45 mi (1,178.77 km) |
| Rockford to Arecibo (Puerto Rico) | 2,102.42 mi (3,383.52 km) |
| Rockford to Arkadelphia (Arkansas) | 602.52 mi (969.66 km) |
| Rockford to Arkansas City (Kansas) | 554.83 mi (892.91 km) |
| Rockford to Arlington (Tennessee) | 484.76 mi (780.14 km) |
| Rockford to Arlington (Texas) | 793.89 mi (1,277.64 km) |
| Rockford to Arlington (Virginia) | 669.19 mi (1,076.96 km) |
| Rockford to Arlington (Washington) | 1,647.20 mi (2,650.91 km) |
| Rockford to Arlington Heights (Illinois) | 56.52 mi (90.96 km) |
| Rockford to Arnold (Maryland) | 694.41 mi (1,117.55 km) |
| Rockford to Arnold (Missouri) | 273.44 mi (440.07 km) |
