| Prospect Heights to Abilene (Texas) | 928.94 mi (1,494.98 km) |
| Prospect Heights to Accokeek (Maryland) | 621.23 mi (999.77 km) |
| Prospect Heights to Acworth (Georgia) | 583.39 mi (938.87 km) |
| Prospect Heights to Ada (Oklahoma) | 692.68 mi (1,114.76 km) |
| Prospect Heights to Addison (Illinois) | 12.64 mi (20.35 km) |
| Prospect Heights to Addison (Texas) | 797.45 mi (1,283.37 km) |
| Prospect Heights to Adelanto (California) | 1,671.94 mi (2,690.72 km) |
| Prospect Heights to Adelphi (Maryland) | 613.53 mi (987.38 km) |
| Prospect Heights to Adrian (Michigan) | 199.80 mi (321.55 km) |
| Prospect Heights to Affton (Missouri) | 276.15 mi (444.42 km) |
| Prospect Heights to Agoura Hills (California) | 1,752.55 mi (2,820.46 km) |
| Prospect Heights to Aguadilla (Puerto Rico) | 2,039.92 mi (3,282.93 km) |
| Prospect Heights to Aiken (South Carolina) | 681.74 mi (1,097.16 km) |
| Prospect Heights to Akron (Ohio) | 338.35 mi (544.53 km) |
| Prospect Heights to Alabaster (Alabama) | 616.78 mi (992.61 km) |
