I've always wanted to hike Mt. Lassen, from all the information I gathered my early years, I thought Mt. Lassen was a 7 mile one way hike. When ever I googled Mt. Lassen, Bumpass Hell will come up, so I thought the two were in the same hike. Needless to say, they are both separate and fairly easy hike, Bumpass Hell is, Mt. Lassen is an Moderate to hard hike. It's a 2.5 miles one way, 2000 ft elevation, starting point is already at 8511 ft above sea level.