Ajax Sleepaway Camp

Ajax Sleepaway Camp is a sleepaway camp for boys and girls ages 8–13. It includes more than 30 activities, and the camp says there are about 40 campers per session. The program has 2-week sessions and 1-week sessions, with four sessions each summer.

Programs

• Ajax Sleepaway Camp — 8–13 · 2-week sessions and 1-week sessions; four sessions each summer · Sleepaway camp with 30+ activities, boys and girls, and around 40 campers per session.

At a glance

• Ages: 8–13 years old
• Current session: Summer 2027 Session 1 (Jun 27–Jul 10, 2027); Summer 2027 Session 2 (Jul 11–Jul 24, 2027); Summer 2027 Session 3 (Jul 25–Aug 7, 2027); Summer 2027 Session 4 (Aug 8–Aug 14, 2027)
• General schedule: Typical day includes optional pre-breakfast activities at 7:00 AM, wakeup at 7:30 AM, breakfast at 8:00 AM, morning ranch job at 9:00 AM, morning activity period at 10:00 AM, lunch at 12:00 PM, rest/chill time at 1:00 PM, afternoon activity period at 2:00 PM, pre-dinner hiatus at 5:30 PM, dinner at 6:00 PM, after-dinner activities at 8:00 PM, night-time campfire at 9:30 PM, and bedtime at 10:00 PM.

About the provider

Ajax Adventure Camp started in 2010 as a day camp in Aspen. Sleepaway began in 2016, when a 320-acre ranch in the upper Frying Pan Valley became available. In 2023, Oliver Umpleby moved from directing Ajax Adventure Camp to help launch Ajax Sleepaway full time. The founder is Danny Hundert, and the camp director is Oliver Umpleby. The camp’s mission statement is: “Inspire awesomeness.”

• Early bird discount — 2.5% off

About 40 campers per session. 1:3 staff-to-camper ratio. Boys and girls villages, each divided by age. 35% deposit holds your spot. Balance auto-billed monthly through March 1. Allergies and dietary restrictions are collected for each camper and accommodations are made. The camp says it is for boys and girls who love adventure, the mountains, building camp traditions, fun outdoor activities, and don't mind getting dirty.

What families say

“The thing that makes Ajax truly special is the freedom and choice it gives campers. Our child loved being able to pick her own activities, which helped her feel empowered and excited every day. She grew more confident, independent, and joyful over just two weeks.” — Nicole R.

“My kids have gone to Ajax for the past two summers. They both love the activities, animals, counselors, food and the other campers they’ve met at Ajax. The camp is located in an amazing setting a short distance from Aspen and as a parent, I knew the kids were having fun in this natural environment.” — Andrew K.

Last updated September 5, 2026.