Mount Harkness Trail
California
Free — you'll pick up right here.
4.9 mi
Distance
3,611 ft
Gain
2h 56m
Time
No verdict for this trail
We won't guess. Here is exactly what we do and don't know.
What we do know
Inside Lassen Volcanic National Park
3 managing-area boundaries mapped — agency alerts for them feed this page automatically.
Boundary data
What's missing
No access route mapped
We don't yet know which road reaches this trailhead, so we can't tell you if it's gated.
Nobody's filed a report here yet — be the first.
Why you'll love it
Here's your day, mapped
Mount Harkness Trail
Suggested plan · check conditions before you go
Meals
Gear for the day
Elevation & route
- Distance
- 4.9 mi
- Elevation gain
- 3,611 ft
- Elevation loss
- 3,611 ft
- Highest point
- 7,777 ft
- Lowest point
- 5,304 ft
Photos
Directions & GPX
Permits & access
- Managing agency
- National Park Service
About this trail
Mount Harkness Trail is a 9.88-mile out-and-back hike in California with 3,611 feet of elevation gain and loss, reaching a maximum elevation of 7,777 feet.
Facts about this trail
The climb
- Starts at
- 5,304 ft
- High point
- 7,777 ft
- Total climbing
- 3,611 ft
- Total descent
- 3,611 ft
- Steepest stretch
- 29% grade around mile 0.4 on the way out
- Length (round trip)
- 9.9 mi
- Shape
- Out and back
It rolls up and down the whole way rather than holding one long climb.
Source: Roamze elevation profile and trail geometry (DEM samples along the mapped route)
Where it is
- Almanor Ranger District · Ranger district
- Lassen Volcanic National Park · National Park Service
- Lassen National Forest · National forest
- Managed by
- National Park Service
Source: USFS EDW boundaries; NPS Land Resources boundaries; USGS PAD-US 4.1
Conditions
Active alerts for Lassen Volcanic National Park as of Oct 10, 2026:
Visitor Phone Line Intermittent
Information · posted Aug 24, 2026
EV charging station unavailable
Information · posted Aug 24, 2026
Juniper Lake Campground Closed
Information · posted Aug 24, 2026
Source: NPS Alerts API
Nearby
- Kelly Camp TrailHiking1.2 mi
- Juniper Lake Loop TrailHiking1.3 mi
- Indian Lake TrailHiking1.3 mi
- Juniper Lake GroupCamping2.7 mi
- Juniper Lake Stock CorralCamping2.7 mi
- Loading Zone, TheRock climbing2.8 mi
- Fallout Zone, TheRock climbing2.9 mi
- Domingo SpringsCamping4.7 mi
Source: Roamze catalog (indexable pages within 10 miles, PostGIS distance)
Add to a trip & share
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Map and trail data © OpenStreetMap contributors
