National forest · Oregon
Mount Thielsen Wilderness, Umpqua National Forest
Mount Thielsen Wilderness, Umpqua National Forest is run by the USDA Forest Service. Its own timing: August.
Mount Thielsen Wilderness, Umpqua National Forest in pictures
Illustrative photos, not current conditions

What the USDA Forest Service says
“At 9,182 ft., Mt. Thielsen is the highest point on the Umpqua National Forest.”Visit official site ↗
When to go
In the source's own words; no peak claimed unless the source says so
- August“August is generally the best month to view alpine wildflowers”
- Best viewing“August is generally the best month to view alpine wildflowers including: Western pasqueflower ( Anemone occidentalis ), dirty socks( Eriogonum pyrolifolium ), partridge flower ( Luetkea pectinata ), Newberry’s knotweed ( Polygonum newberryi ), and Jacob’s ladder ( Polemonium pulcherrimum ).”
Before you go
This is a strenuous climb. Hiking boots and plenty of water are essential.
Worth the drive
60 to 100 straight-line miles away
McKenzie Pass 71 mi
How we know
Every fact on this page, from these pages
- Sep 30Park ServiceMount Thielsen Wilderness Area: seasonal timing (Codex round 25; saved under research/round25/pages/)Source (opens USDA Forest Service, Mount Thielsen Wilderness Area in a new tab)