IMPORTANT! This trip is in the United States.  Only sign up if you have a valid passport and will have no difficulty crossing the border for any reason!

Already climbed the North Twin Sister?  Not sure if you're up to climbing the North Twin Sister?  Come climb its higher yet slightly easier twin to the south!

Day 1: Leave Vancouver mid-late morning, cross border at Sumas and head to trailhead.  Bike up road (~3 hours biking) to basin between North and South Twin Sisters and set up camp

Day 2: Rise early, climb South Twin Sister via W Ridge (long, fairly exposed class 3 scramble), descend via same route, pack up camp, and bike down road back to cars (probably a 9-10 hour day).  Dinner at North Fork Beer Shrine, back to town in evening

Helmet, Ice Axe mandatory.  Bike recommended for the road, although if you don't have one the trip is still doable... just slower coming down.  We will bring along a short rope for safety.

Trip will be postponed if there is not a reasonable expectation of good weather as the route will only be safe if dry and with visibility.

Only sign up if you are committed to coming on the trip!