Lost Horizon Creek is a stream located in Yukon-Koyukuk County, Alaska. It appears on the Livengood C-2 NE USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 1,127.60 feet (343.69 m) above sea level. The nearest populated place is Livengood, approximately 27.7 miles to the WSW.