40N01C Extension Trail
California
Free — you'll pick up right here.
0.6 mi
Distance
220 ft
Gain
16 min
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 National Forest
2 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
40N01C Extension Trail
Suggested plan · check conditions before you go
Meals
Gear for the day
Elevation & route
- Distance
- 0.6 mi
- Elevation gain
- 220 ft
- Elevation loss
- 220 ft
- Highest point
- 3,853 ft
- Lowest point
- 3,790 ft
Photos
Directions & GPX
Permits & access
- Managing agency
- Forest Service
About this trail
The 40N01C Extension Trail is a 1.28-mile out-and-back route in California with 220 feet of elevation gain and loss, reaching a maximum elevation of 3,853 feet.
Facts about this trail
The climb
- Starts at
- 3,853 ft
- High point
- 3,853 ft
- Total climbing
- 220 ft
- Total descent
- 220 ft
- Steepest stretch
- 6% grade right from the start
- Length (round trip)
- 1.3 mi
- Shape
- Out and back
Source: Roamze elevation profile and trail geometry (DEM samples along the mapped route)
When to go
Typical monthly averages (not a forecast) from the Hat Creek, CA weather station, 23 mi away. High / low in °F, and days with snow.
- Jan48° high22° low1 days with snow
- Feb53° high24° low1 days with snow
- Mar58° high28° low1 days with snow
- Apr64° high32° low
- May74° high38° low
- Jun82° high43° low
- Jul91° high47° low
- Aug91° high44° low
- Sep85° high38° low
- Oct71° high30° low
- Nov56° high26° low
- Dec46° high22° low1 days with snow
Where it is
- Hat Creek Ranger District · Ranger district
- Lassen National Forest · National forest
- Managed by
- Forest Service
Conditions
Active alerts for Lassen National Forest as of Oct 9, 2026:
SAFETY ALERT - South Antelope Bridge out, Do Not Cross
critical · posted Aug 24, 2026
critical · posted Aug 24, 2026
Lassen National Forest Camping Restrictions
information · posted Aug 24, 2026
Lake Almanor Area Camping Restriction
information · posted Aug 24, 2026
Lake Almanor Recreational Trail Restriction
information · posted Aug 24, 2026
Source: USFS forest alerts
Nearby
- 4ON32Y Conector TrailHiking1.3 mi
- Timbered Crater TrailHiking6.1 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
