| Prospect Heights to Arcata (California) | 1,859.10 mi (2,991.93 km) |
| Prospect Heights to Archdale (North Carolina) | 604.91 mi (973.51 km) |
| Prospect Heights to Arden-Arcade (California) | 1,766.78 mi (2,843.36 km) |
| Prospect Heights to Ardmore (Oklahoma) | 739.66 mi (1,190.38 km) |
| Prospect Heights to Ardmore (Pennsylvania) | 673.30 mi (1,083.57 km) |
| Prospect Heights to Arecibo (Puerto Rico) | 2,053.90 mi (3,305.44 km) |
| Prospect Heights to Arkadelphia (Arkansas) | 617.88 mi (994.38 km) |
| Prospect Heights to Arkansas City (Kansas) | 596.30 mi (959.65 km) |
| Prospect Heights to Arlington (Tennessee) | 482.11 mi (775.89 km) |
| Prospect Heights to Arlington (Texas) | 821.77 mi (1,322.51 km) |
| Prospect Heights to Arlington (Virginia) | 610.38 mi (982.31 km) |
| Prospect Heights to Arlington (Washington) | 1,704.28 mi (2,742.77 km) |
| Prospect Heights to Arlington Heights (Illinois) | 2.92 mi (4.71 km) |
| Prospect Heights to Arnold (Maryland) | 635.39 mi (1,022.55 km) |
| Prospect Heights to Arnold (Missouri) | 284.72 mi (458.21 km) |
