Activity Notes

This is a part of a multi-climb activity: North Sister & Middle Sister (Summer 2026)

We’ll climb North Sister and Middle Sister in a single-day push. The plan is to hike in on Saturday and establish camp, start early Sunday to climb both peaks, return to camp, and hike out on Monday.

This is a big objective suited for strong, seasoned climbers who can move efficiently and handle long, demanding days. Expect early starts, steady pacing, and a lot of ground covered.

Registration is Closed

We’re sorry to report that registration is now closed for this activity and we are no longer accepting applications. The activity has either reached its maximum capacity or the registration period has ended.
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Have questions about registration or your application status?

Email help@mazamas.org or call (503) 227-2345

Group Information
Groups Climb Leaders
Grad Preference ICS

WE‘RE HERE TO HELP

Have questions about registration or your application status?

Email help@mazamas.org or call (503) 227-2345