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California
5.0 mi
Distance
2,641 ft
Gain
We won't guess. Here is exactly what we do and don't know.
What we do know
Inside Angeles 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
Sam Merrill (Middle)
AI-suggested draft · review before you go
No permit or access details on file for this trail — check with the local land manager before you go.
The Sam Merrill Trail (Middle section) is a moderately challenging ascent through the San Gabriel Mountains near Altadena, offering steady elevation gain through chaparral and pine forest. This popular route provides excellent views of the Los Angeles basin and surrounding peaks as you climb toward Mount Lowe. The well-maintained trail features consistent switchbacks and is ideal for hikers seeking a solid cardiovascular workout with rewarding vistas.
Echo Mtn
~1 min drive
Steep 1.71-mile climb to Echo Mountain with panoramic views.
Dawn Mine Trail
~1 min drive
Moderate 4.2-mile hike with 1,673 ft gain to historic mine site.
Bear Canyon
~3 min drive
Moderate 9-mile canyon hike with 1,075 ft elevation gain.
Sunset Ridge
~2 min drive
Easy 0.2-mile walk with minimal elevation gain.
Merrill (Upper)
~2 min drive
Steep alpine climb with 1,648 ft gain over 3.4 miles.
Colby Canyon
~8 min drive
Moderate 8.79-mile canyon hike with 2,742 ft elevation gain.
Mt Lowe (West)
~2 min drive
Steep 2.56-mile climb to Mt Lowe with 1,412 ft elevation gain.
Tom Sloane
~2 min drive
Steep 3.66-mile climb with 1,372 ft elevation gain in California.
Hoyt Mt. to Pines Picnic Trail
~8 min drive
Easy 1.3-mile connector trail through forest to scenic picnic area.
Sunset Ridge Lower
~2 min drive
Short ridge trail with steady elevation gain and scenic views.
