| Boulder to Hilliard (Ohio) | 1,165.90 mi (1,876.33 km) |
| Boulder to Hillsboro (Oregon) | 971.44 mi (1,563.37 km) |
| Boulder to Hillsborough (California) | 935.35 mi (1,505.29 km) |
| Boulder to Hillsborough (New Jersey) | 1,605.49 mi (2,583.79 km) |
| Boulder to Hilo (Hawaii) | 3,248.91 mi (5,228.61 km) |
| Boulder to Hilton Head Island (South Carolina) | 1,465.02 mi (2,357.72 km) |
| Boulder to Hinesville (Georgia) | 1,433.16 mi (2,306.45 km) |
| Boulder to Hinsdale (Illinois) | 911.31 mi (1,466.62 km) |
| Boulder to Hobart (Indiana) | 944.70 mi (1,520.35 km) |
| Boulder to Hobbs (New Mexico) | 517.37 mi (832.62 km) |
| Boulder to Hobe Sound (Florida) | 1,691.27 mi (2,721.84 km) |
| Boulder to Hoboken (New Jersey) | 1,635.35 mi (2,631.85 km) |
| Boulder to Hockessin (Delaware) | 1,560.16 mi (2,510.84 km) |
| Boulder to Hoffman Estates (Illinois) | 900.87 mi (1,449.82 km) |
| Boulder to Holbrook (New York) | 1,684.39 mi (2,710.77 km) |
