Here for an interactive map of Yellowstone National Park. There is an entrance fee for Yellowstone National Park, but no permit is required to hike to Lost Lake.
Rating: Elevation Gain: 300 ft. (Easy), Distance: 2.8 Miles Roundtrip (Easy).
Time to Complete Hike: 1.5 - 2 hours.
MORE TRAIL WRITE-UPS ON YELLOWSTONE NATIONAL PARK
View Lost Lake in a larger map