South Sister is the highest of the Three Sisters and is located in Central Oregon. This approach is from Green Lakes, and typically involves an overnight at the lakes. The climb is long, but not technical. Outstanding views from the summit.

Activity Notes

This climb is part of the Autumn 2025: South Broken Jack multi-peak climb. 

Please refer to that for more information.

Other Information
Driving Distance from Portland 190 miles
Driving Time from Portland 4 hours
Expected Duration Car to car in two or more days
Relevant Books Oregon High by Jeff Thomas
Relevant Maps USGS 7 1/2 minute series: South Sister, and Geo-Graphics, Three Sisters Wilderness <href="http: "="" adventure="" c463="" starts-here="" title="On the Mazama Climbing and Hiking map page " www.mazamas.org="" your="">On the Mazama Climbing and Hiking map page <href="http: maps.google.com="" maps?f="q&source=s_q&hl=en&geocode=&q=middle+sister&sll=44.103449,-121.769206&sspn=0.018891,0.04549&g=north+sister&ie=UTF8&ll=44.127028,-121.734352&spn=0.151065,0.363922&t=p&z=12"" title="Google maps">Google maps</href="http:></href="http:>
Awards Qualified 16 Major NW Peaks, Seven Oregon Cascades Peaks
Useful Links GPS Coordinates New Window Icon Icon two stacked browser windows. Map New Window Icon Icon two stacked browser windows.
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