| Rock Island to Arcata (California) | 1,731.66 mi (2,786.83 km) |
| Rock Island to Archdale (North Carolina) | 689.27 mi (1,109.27 km) |
| Rock Island to Arden-Arcade (California) | 1,632.73 mi (2,627.63 km) |
| Rock Island to Ardmore (Oklahoma) | 616.13 mi (991.56 km) |
| Rock Island to Ardmore (Pennsylvania) | 805.69 mi (1,296.63 km) |
| Rock Island to Arecibo (Puerto Rico) | 2,122.37 mi (3,415.63 km) |
| Rock Island to Arkadelphia (Arkansas) | 525.29 mi (845.37 km) |
| Rock Island to Arkansas City (Kansas) | 459.70 mi (739.82 km) |
| Rock Island to Arlington (Tennessee) | 431.95 mi (695.15 km) |
| Rock Island to Arlington (Texas) | 704.61 mi (1,133.96 km) |
| Rock Island to Arlington (Virginia) | 733.06 mi (1,179.75 km) |
| Rock Island to Arlington (Washington) | 1,601.81 mi (2,577.87 km) |
| Rock Island to Arlington Heights (Illinois) | 140.75 mi (226.52 km) |
| Rock Island to Arnold (Maryland) | 760.45 mi (1,223.83 km) |
| Rock Island to Arnold (Missouri) | 210.35 mi (338.53 km) |
