South Twin Sister

Alpine Climb on South Sister via Green Creek Arete and the NE Ridge Join us for a classic alpine climb in the Twin Sisters Range on South Twin via the Green Creek Arete route! This 3 or 4-day adventure offers climbers the chance to experience a gem of the North Cascades with 2-3 nights on the mountain, providing ample time to enjoy and explore. Highlights of the Expedition Classic Green Creek Route: A local classic climbing route on diorite rock whic is very grippy. Ascend up 3rd & 4th class rock ridges and a crux pitch of 5.5 YDS up onto the Sisters Glacier. Then climb the moderate snow before traversing on to South Sister NE Ridge then scramble class 3 to the top. Flexible Itinerary: Options for weather delay or additional climbs on nearby routes such as the North Ridge of Cinderella or East Ridge of Little Sister. Intimate Group Sizes: Climb with a 2:1 guest-to-guide ratio for personalized safety focused attention. Why Choose Our South Twin Sister Climb? Maximized Mountain Time: Starting in Welcome, Washington, minimizes travel time and maximizes climbing time. Flexible Climbing Options: An extra day allows for flexibility in case of weather delays or additional climbing routes. Stunning Scenery: Experience the breathtaking views and challenging terrain of the North Cascades and the Puget Sound. Secure Your Spot Today! Don't miss out on this incredible climbing experience on South Twin Sister. Whether you're an experienced climber or looking to take on a new challenge, our Green Creek Arete route offers a rewarding and unforgettable adventure. Book now to reserve your place on this iconic alpine climb! Itinerary Day 1: Meet in the picturesque village of Welcome, Washington. Gear check and hike into camp at Green Creek or continue up the Green Creek Arete to camp on the Sisters Glacier. Day 2: Climb the Green Creek Arete to the Sisters Glacier, and up the South Sister NE Ridge. Descend back to camp or hike out Day 3: Option to climb another nearby route on Cinderella or Little Sister and return to camp or descend back to the Trailhead Day 4: Descend and hike out to the trailhead.   Best for Fit Climbers: Those with strong fitness for up to 4 days of climbing. Experienced Scramblers: Ability to scramble 3rd and 4th class terrain up to 5.5 YDS with a multi-day backpack. Prepared Mountaineers: Prior experience with crampons, ice axes, and basic climbing knots and hitches.   Cancellation Policy It is your responsibility to be familiar with our Payment, Cancellation, and Rescheduling Policies. When you book a trip with Guided Exposure, you are agreeing to our policies outlined here: guidedexposure.com/pages/cancellation-policy