Willamette National Forest · Oregon

Castle Rock

4.4 mi of trail, end to end · about 250 ft of climbing · 1,800 ft of descent · 2,200 ft–3,801 ft · native material surface · trail No. 3506 · trail class 3 · typical grade 12-20% · tread 18-24 inches wide · hiking, bike

3,801 ft 2,216 ft · 4.2 mi high 3,801 ft

Trailhead Castle Rock Trailhead 3,163 ft Drive there

Castle Rock Trailhead the Forest Service's write-up

This trailhead provides access to:

Castle Rock Trail #3506

King Castle Trail #4326

O Leary Mountain Trail #3321

See Trail page for more information.

This trailhead on fs.usda.gov

O'Leary / Castle Rock Trailhead the Forest Service's write-up

This trailhead provides access to:

Castle Rock Trail #3506

Echo Trail #3309

O'Leary Mountain Trail #3321

See Trail page for more information.

This trailhead on fs.usda.gov

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About this trail's facts

The lines are the US Forest Service's National Forest System trails layer (public domain), read 2026-10-16 and simplified for the map; the length is the line's, end to end, and the class, surface, grade and tread width are the forest's own entries where it publishes them - a forest that publishes the centreline alone has none. The trailheads and the points along the way are the Service's recreation points, and the write-ups its own recarea text, unedited. Heights come from USGS 3DEP through Terrain Tiles on AWS (Mapzen/Tilezen), read along each line and rounded; a short trail on steep ground can be off by a few tens of feet. Closures change: check the forest's own site before you go.