What we're about

CHAOS is an informal, Boulder-based group of energetic, fun, non-competitive, backcountry enthusiasts who are in their 20s, 30s, or 40s who enjoy self-powered and self-organized activities including hiking, backpacking, biking, snow shoeing, skiing, mountaineering, and river sports.

CHAOS' main Goal is to be a community through which one can make life-long friendships, share backcountry trips, expand outdoor and leadership skills, appreciate nature and enjoy the sense of community, teamwork, and challenge that prospers in backcountry situations.

As a member you will be able to check activities on this website, and post your own trips/events. Note that all trips should be for CHAOS by CHAOS, outdoors, and self powered.

CHAOS actively encourages its members to organize trips but does not supervise the activities. CHAOS is not a guide service and a person should only go on trips they feel are appropriate for their ability and experience level.

If you have questions, ask the trip organizer! Many trip organizers love to help out new members and will gladly answer any questions you have about the trip, what equipment to bring, etc. Above all else, have fun and be safe!

Here is a Welcome To Chaos document with more information: https://docs.google.com/document/d/1aLFTysl452wTZcaSYt3KP4brsqsqL867Cos1xZ2gavg/edit?hl=en_US

Many past and present members believe that CHAOS enormously improved their "young adulthood and pre-family" phase of life. To ensure that this wonderful opportunity remains for future members, they should be in their 20's, 30's or 40's when they join CHAOS.

If the members’ ages or the group’s style don’t feel like a good fit for you, we suggest you check out one of the other great clubs in Boulder like the Flatirons Ski Club, the Boulder Outdoor Group, the Colorado Mountain Club, the Boulder Nordic Ski Club, the Sierra Club, or the C.U. Hiking Club (office in UMC).

Please be respectful when you RSVP to events, and only RSVP if you know you will make the event; especially if there is a limited number of spots available. If you end up with three no-shows; whether it's a no call/no show, or a cancel at the last minute; you will be removed from the group.

Upcoming events (5+)

Enchanted Mesa-Kohler Tr *MORNING HIKE* (Boulder Open Space Trail Challenge)

To celebrate the 50th anniversary of the City of Boulder Open Space program, join us for the Boulder Open Space Trail Challenge. This Trail Challenge consists of hiking all trails that are part of Boulder Open Space, which comprises of 150 miles of trail! Some trails are easy, flat trail walks and some are steep rock scrambles. https://bouldercolorado.gov/osmp/osmp-trail-challenge This morning, we do a hike starting at the Chautauqua Auditorium. We will take Enchanted Mesa Tr to Enchanted-Kohler Spur. Then Kohler-Mesa to Four Pines. Follow Four Pines to King Avenue then walk along residential streets until we get to McClintock Lower Tr and follow that back to our cars. The total distance is around 3 miles. After this segment, I will head over to Sanitas to cover one piece of trail I need for the trail challenge.

Cherryvale Tr + Chautaqua *MORNING HIKE* (Boulder Open Space Trail Challenge)

To celebrate the 50th anniversary of the City of Boulder Open Space program, join us for the Boulder Open Space Trail Challenge. This Trail Challenge consists of hiking all trails that are part of Boulder Open Space, which comprises of 150 miles of trail! Some trails are easy, flat trail walks and some are steep rock scrambles. https://bouldercolorado.gov/osmp/osmp-trail-challenge This morning, we do an in-and-out hike of Cherryvale Trail in south Boulder of about 2.2 miles RT. Then we will head over to Chautaqua to do an in-and-out of the Meadow Trail. The total distance is roughly 3.5 miles overall for both trails.

Get together at Verde Boulder

Verde Boulder

Let's get together at Verde Boulder to celebrate Mike's birthday. Join us for margaritas and some good company. Please, bring one of your favorite games if you like.

Full Moon Hike from NCAR (two hours)

National Center for Atmospheric Research (NCAR)

We'll hike up Dinosaur Mountain (a.k.a. the Mallory Cave Trail). It's about two hours round trip, plus side adventures. This hike is short but steep. We'll start hiking at 3:00pm. The full moon rises at 4:46pm. Sunset is at 5:06pm and darkness is at 5:35pm. We'll get dinner at the Southern Sun at 6:00pm. Friendly dogs are welcome. Bring a headlight, microspikes, and trekking poles. The trail will be icy, with cliffs. If you're late you should be able to catch up with us. At the last switchback before Mallory Cave look for a trail going up to the right. If you decide not to go change your RSVP to "No" so we don't wait for you. My cellphone is (720)[masked]. Meet in the parking lot at the sign that says "You Are Here" (and something about NCAR access). 1850 Table Mesa is not the address. From Broadway and Table Mesa go west (towards the mountains) up to the end of Table Mesa.

Past events (996)

Photos (8,035)