All Trails

South Sister

Pacific NW · 44.103, -121.769

Oregon's third highest peak and the state's most climbed glacier peak. 12 miles round trip with 4,900 ft gain. Non-technical but relentless scree.

StrenuousPacific NW10,358 ftSummitAlpineScrambleSummit viewsGeology

South Sister

☀️ Clear sky

Use Caution
45°
Feels 35°FSummit · 10,358 ft
5:39 AM8:47 PM
WINDY

Wind

26mph

Precip

0%

Humid

72%

Elev Δ

+4900ft

12-Hour Temp Trend

36°47°

Hourly Forecast

5 PM

☀️

47°

9mph

6 PM

☀️

45°

9mph

7 PM

☀️

45°

8mph

8 PM

☀️

44°

7mph

9 PM

☀️

42°

5mph

10 PM

☀️

40°

4mph

11 PM

☀️

40°

5mph

12 AM

☀️

39°

6mph

1 AM

☀️

39°

6mph

2 AM

☀️

38°

5mph

3 AM

☀️

36°

7mph

4 AM

☀️

36°

7mph

Summit Conditions

58°F→−13°→45°F

Wet lapse rate: 2.7°F/1,000ft · 4,908 ft gain

◎L1
Merino wool 200g base layer

Medium-weight merino regulates temp and resists odor on long days

◉L2
Grid fleece jacket

Stretchy grid fleece balances warmth and breathability on climbs

◈L3
Wind shell jacketPACK

Blocks summit wind without trapping sweat on the approach

Summit Pack List

↟Wind shell↟Light puffy (optional)↟Beanie↟Light gloves

Start Cold Tip

Start in your base + fleece. You'll warm up on the switchbacks. Pack your wind shell for the exposed ridge — wind hits different above treeline.

Trail Guide

Updated 4:44:23 PM · America/Los_Angeles

Updated Jul 16, 4:44 PM UTC

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