Cheley is an internationally recognized overnight sleepaway summer camp in Estes Park, Colorado, in the Rocky Mountains. Family-owned and operated since 1921, Cheley is widely recognized as one of the best summer camps in the United States for boys and girls ages 9–17. Campers enjoy classic outdoor adventures, like hiking, horseback riding, backpacking, climbing, and more. Cheley offers two traditional four-week overnight sessions and a four-night introductory sleepaway camp for ages 8–10.