About
Ajax Sleepaway offers activities such as fishing, paddleboarding, slip and slide, camping trips, overnights, s’mores, hiking, campfires, stargazing, archery, rock climbing, ziplining, biking, arts & crafts, canoeing, and outdoor laser tag. The program admits a maximum of about 40 campers at any given time and has an average staff to camper ratio of 1:2. Age 14 is only admitted if the camper is returning and agrees to the terms of being an Ajax Elder.
• Ages: 8–14 years old
• Schedule: Session 1 (1 Week) June 28th - July 4th, 2026; Session 2 (2 Weeks) July 5th - July 18th, 2026; Session 3 (2 Weeks) July 19th - Aug 1st, 2026; Session 4 (1 Week) Aug 2nd - Aug 8th, 2026
Ajax Sleepaway states that campers are encouraged to help build nascent camp traditions and activities and describes itself as a quintessential Colorado overnight summer camp. The camp asks families to pack comfortable outfits for outdoor activities and themed events, a sleeping bag, flashlight, toiletries, and suggests optional items such as a camera, journal, and small backpack for hikes, packed in a duffel or plastic tote, and states that if campers forget everything, they will lend what is needed. Transportation is provided from Denver.
Ajax Adventure Camp was founded in 2010, and Ajax Sleepaway began in 2016 after a ranch opportunity presented itself in the upper Frying Pan valley. In 2023, Oliver Umpleby moved from directing Ajax Adventure Camp to help launch Ajax Sleepaway. The leadership team includes Founder Danny Hundert and Camp Director Oliver Umpleby.
Danny earned his bachelor degree cum laude from Dartmouth College in 2007 and his MBA from the Wharton School at the University of Pennsylvania in 2016. Oliver attended Miami University in Ohio, double majored in Economics and German, and minored in Coaching. He coached high school football in the Washington, DC area for five seasons, has spent winters teaching skiing in Colorado including the past three with the Aspen Snowmass ski school, and during summers worked at a sleepaway camp in the Pocono Mountains of Pennsylvania, serving as athletics director in 2012 and later as program director handling all camp operations. The camp’s stated mission is that kids let loose, have fun, and be themselves, and that through activities and the magic of summer camp, every kid finds their passions, learns a ton (without knowing it), and laughs more than they thought possible.
Last updated February 24, 2026.
• Ages: 8–14 years old
• Schedule: Session 1 (1 Week) June 28th - July 4th, 2026; Session 2 (2 Weeks) July 5th - July 18th, 2026; Session 3 (2 Weeks) July 19th - Aug 1st, 2026; Session 4 (1 Week) Aug 2nd - Aug 8th, 2026
Ajax Sleepaway states that campers are encouraged to help build nascent camp traditions and activities and describes itself as a quintessential Colorado overnight summer camp. The camp asks families to pack comfortable outfits for outdoor activities and themed events, a sleeping bag, flashlight, toiletries, and suggests optional items such as a camera, journal, and small backpack for hikes, packed in a duffel or plastic tote, and states that if campers forget everything, they will lend what is needed. Transportation is provided from Denver.
Ajax Adventure Camp was founded in 2010, and Ajax Sleepaway began in 2016 after a ranch opportunity presented itself in the upper Frying Pan valley. In 2023, Oliver Umpleby moved from directing Ajax Adventure Camp to help launch Ajax Sleepaway. The leadership team includes Founder Danny Hundert and Camp Director Oliver Umpleby.
Danny earned his bachelor degree cum laude from Dartmouth College in 2007 and his MBA from the Wharton School at the University of Pennsylvania in 2016. Oliver attended Miami University in Ohio, double majored in Economics and German, and minored in Coaching. He coached high school football in the Washington, DC area for five seasons, has spent winters teaching skiing in Colorado including the past three with the Aspen Snowmass ski school, and during summers worked at a sleepaway camp in the Pocono Mountains of Pennsylvania, serving as athletics director in 2012 and later as program director handling all camp operations. The camp’s stated mission is that kids let loose, have fun, and be themselves, and that through activities and the magic of summer camp, every kid finds their passions, learns a ton (without knowing it), and laughs more than they thought possible.
Last updated February 24, 2026.
Is this your business? There is no cost, but you will be asked to sign up or log in.