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 (4)

6-Peak Boulder Skyline Traverse (22 miles / 7600')

NCAR Trail Head

Presenting, the notorious 6 peak Boulder Skyline Traverse! Hike 6 peaks starting with Sanitas, then Anemone, Flagstaff, Green, Bear and SoBo.

Starting at Centennial Trailhead, go up Sanitas, then down Lions' Lair to a social trail that takes us up Anemone, descending down to Red Rocks. After Red Rocks, standard trails to Flagstaff; Greenman to Green, Bear Peak West Ridge to Bear, then SoBo. Down Shadow Canyon to Mesa all the way to NCAR.

We will try to regroup at summits.

The total distance is roughly 22 miles with 7600' of uphill.

Route is mapped out here


Meet at NCAR parking lot at 5am!

Rain, snow or winds cancel.

Hike *The Alphabetizer* (5 peaks over 12k) in the Lost Creek Wilderness

This is a great late season hike as it is somewhat lower elevation than "the usual". This hike is described Roach's book "Colorado's Lost Creek Wilderness". The goal is to ascend Peaks X, X Prime, Y, Z and Zephyr starting from Long Gulch and ending at South Ben Tyler trailhead.

The stats are roughly 13 miles with 4200' vertical and some great above treeline scenery. Given that this hike is little-known, expect solitude.

Since it is November, we'll be sure to carry headlamps!

This hike is weather dependent; rain or snow storm cancels.

Front Range 13ers: Mt Lady Washington (13,281’) (TENTATIVE)

Amante Coffee (Uptown Broadway)

Approximately 8 miles and 4000 feet of elevation gain with views of Longs Peak, Storm Peak B, Peacock pool and Chasm lake.

This hike is highly weather dependent! Snowstorm, rain or high winds cancel. (We'll figure out a good substitute hike in that case!)

Bring microspikes, snowshoes, snacks, winter gear!!

Start Elevation: 9400’
End Elevation: 13281’
Skill Level: Strenuous


No dogs are allowed in this trail.

Rain, snow storm or high winds cancel.

Meet at 5am at Amante to organize carpool.

Centennial Cone Mega Loop

Eldorado park and ride

Starting at Mayhem Gulch Trailhead (off route 6), let's hike the mega loop that covers all the trails in this part of the JeffCo trail system.

Since this is part of JeffCo's trail system, expect pretty easy trail generally, so we may finish quicker than advertized.

The total distance is 17 miles with about 2500' of gain.


Past events (1,197)

Bear Peak via Fern Canyon *SUNSET HIKE*

Lehigh Connector - North

Photos (11,988)