How long is Bumpass Hell (Lassen)?

3 miles, out & back, with about 300 feet of elevation gain — roughly 1 hr 9 min at a steady pace.

How hard is Bumpass Hell (Lassen)?

It's rated Moderate. a boardwalk over steaming fumaroles

Where is Bumpass Hell (Lassen)?

Bumpass Hell (Lassen) is in California. a boardwalk over steaming fumaroles

Roamward

Open iOS beta

Moderate

Bumpass Hell (Lassen)

California

Distance3 mi

Est. time~1 hr 9 min

Elevation gain↗ 300 ft

RouteOut & back

Illustrative elevation profile — open in Apple Maps for the live trail map & precise profile.

Bumpass Hell (Lassen) is a moderate 3-mile out & back hike in California with about 300 ft of elevation gain. a boardwalk over steaming fumaroles.

Search in Apple Maps →More California hikes

This handoff is a name search; confirm the correct trailhead before navigating. Check conditions, permits, and weather before you go — trails close, and mountain weather turns fast.

Build a trip around hikes like this.

Save catalog-backed stops to My Trips on the web now. The iOS beta is testing the on-road companion: verified check-ins, badges, shared trips, and your growing map of America.

More to explore in California

Worth the detour

National parks

Forests & wild lands

Camping

Scenic routes

Scenic landmarks

Roadside Americana

Ballparks

Lighthouses

More California guides

See everything in California →