Be Your Camp Self

Located on 320 acres of mountainous terrain at 8,888 Ft.

For boys & girls who love adventure, the mountains, building camp traditions, fun outdoor activities, & don’t mind getting dirty!

Join Us in 2025

We want kids to let loose, have fun, and be themselves. Through the activities and the magic of summer camp, we hope every kid finds their passions, learns a ton (without knowing it), and laughs more than they thought possible.

4 Sessions for 2025

There are 3 cabins in the boys village and 3 cabins in the girls village, each divided by age (8-13*). A maximum of about 40 campers are admitted to camp at any given time.

*age 14 only admitted if a returning camper and agree to “terms” of being an Ajax Elder.

Meet Our Leadership

Ajax Adventure Camp was founded in 2010 with the goal of inspiring awesomeness.

As the day camp quickly became the largest in Aspen, Sleepaway Camp concept was being built. In 2016, a ranch opportunity presented itself in the upper Frying Pan valley and Ajax Sleepaway was borne.

  • The below is written by our student intern:

    Looking for the best Colorado overnight summer camps? Ajax Sleepaway Camp offer unforgettable experiences in the Colorado Rocky Mountains. Discover why Ajax Sleepaway Camp is among the best overnight camp in Colorado. Join us for a summer filled with adventure, friendships, and lifelong memories. Our Colorado overnight summer camp is for mountain kids who want to embrace mountain life. This Colorado Sleepaway Camp is a quintessential sleep away camp with mountainous cabins, ponds for fishing, paddleboarding, and slip and slide and nearly a 100 different activities offered throughout the summer including camping trips, overnights, and s’mores every night. Yes, s’mores every night!

    Explore Best Overnight Summer Camps in Colorado

    Ajax Sleepaway Camp offers one of the best overnight camps in the state of Colorado. We are located in between Aspen and Vail and provide transportation from Denver. Dive into exciting outdoor activities, make new friends, and create lasting memories at our overnight summer camp, here in Colorado. Whether it's hiking, campfires, or stargazing, fishing, archery, rock climbing, ziplining, biking, paddleboarding, camping, and so much more, there's something for everyone. Experience the beauty of Colorado's wilderness and enjoy a fun-filled summer like never before. Join us at Ajax Sleepaway Camp for an amazing summer getaway.

    Ajax is for both Boys and Girls, at the Boys Village: Overnight Camps for Boys

    Ajax Sleepaway Camps offers the best overnight summer camps in Colorado. At this Colorado sleep away camp, we have a boys village with several cabins for each age group. Boys enjoy outdoor adventures, creating lasting memories in a safe and fun environment.

    Ajax is for both Boys and Girls, at the Girls Village: Overnight Camps for Girls

    Discover one of the best Overnight Camps for Girls at Ajax Sleepaway Camp in Colorado. The girls Colorado overnight summer camps experience includes fun-filled adventures at one of the best overnight summer camps in Colorado. 100s of kids camp activities await!

    List of Summer Camp Activities

    Experience the thrill at Ajax Sleepaway Camps with a variety of exciting summer activities like rock climbing, archery, fishing, arts & crafts, canoeing, and nearly 75 more summer activities. Dive into nature with overnight camping trips, zipline adventures, and outdoor laser tag. Discover the best overnight camps in Colorado for an unforgettable summer. We are the quintessential Colorado overnight summer camp!

    List of Packing Items

    Are you ready for an amazing time at top rated Colorado sleep away overnight camp. Below is a highlight of things to bring to camp. We don’t want you to have to purchase anything, so we hope to keep it simple. Please visit the packing list in the footer for more details.

    1. Clothes: Pack comfortable outfits for outdoor activities and themed events.

    2. Gear & Misc: Don't forget your sleeping bag, flashlight, and toiletries.

    3. Other Optional Items: Consider bringing a camera, journal, and a small backpack for hikes.

    Even if you forget everything, we will lend you what you need to ensure you experience one of the best of overnight sleepaway summer camps in Colorado. Pack smart in a duffel or plastic tote and get ready for unforgettable adventures!

    Comparing us to other Colorado Camps like Avid4Adventure, Granite Lakes Camp, or YMCA camps

    There are many good camps in Colorado such as Avid4Adventure or Granite Lakes Camp or YMCA camps, but what sets our sleepaway overnight camp apart is our small size, tight knit community, and personalized attention. We average a staff to camper ratio of 1:2 and feel our close camp community is something extremely special and hard to find elsewhere. Of course our broad list of summer camp activities, fun atmosphere, great food, cool cabins, and so many more things set us apart. But the small community and low camper to staff ratio is really something we take pride in.