| Prospect Heights to Hillcrest Heights (Maryland) | 618.26 mi (995.00 km) |
| Prospect Heights to Hilliard (Ohio) | 286.53 mi (461.13 km) |
| Prospect Heights to Hillsboro (Oregon) | 1,747.28 mi (2,811.97 km) |
| Prospect Heights to Hillsborough (California) | 1,840.95 mi (2,962.73 km) |
| Prospect Heights to Hillsborough (New Jersey) | 697.02 mi (1,121.75 km) |
| Prospect Heights to Hilo (Hawaii) | 4,159.11 mi (6,693.44 km) |
| Prospect Heights to Hilton Head Island (South Carolina) | 790.14 mi (1,271.61 km) |
| Prospect Heights to Hinesville (Georgia) | 790.54 mi (1,272.24 km) |
| Prospect Heights to Hinsdale (Illinois) | 20.95 mi (33.71 km) |
| Prospect Heights to Hobart (Indiana) | 52.87 mi (85.08 km) |
| Prospect Heights to Hobbs (New Mexico) | 1,054.82 mi (1,697.57 km) |
| Prospect Heights to Hobe Sound (Florida) | 1,127.73 mi (1,814.91 km) |
| Prospect Heights to Hoboken (New Jersey) | 725.33 mi (1,167.30 km) |
| Prospect Heights to Hockessin (Delaware) | 658.23 mi (1,059.32 km) |
| Prospect Heights to Hoffman Estates (Illinois) | 11.62 mi (18.70 km) |
