Outdoor day camps in Boulder for children ages 5-15

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Thorne campers explore the great outdoors at world-class Boulder County open spaces, master survival skills, create nature art, and dive into hands-on learning about local plants, animals, and a whole lot more. Join us for a summer of pond mucking, fort building, and creek splashing adventure!

See Available Camps



Camps run from 8:30 am-2:30 pm Monday-Friday with the option to add Extended Care from 2:30 pm-5:30 pm.

See Detailed Camp Descriptions

*Sessions 1, 2, and 3 are 9-day camps for holidays. Session 6 is a 7-day camp.
  • Session 1: No camp May 27
  • Session 2: No camp June 19
  • Session 3: No camp July 4, also offering 5-day camp at Mt. Sanitas June 24-28  
  • Session 6: 7-day camp

**These camp sessions of Eco-Explorers include a visit from special guest, Jeff Kagan of the musical duo Jeff & Paige


Our camps are designed around home open space sites where campers will spend most of their time when they aren’t on field trips to other fabulous open spaces in Boulder County. 


  • Sessions 1, 2, and 3: $899 per session (9-day camps for holidays)
    • Extended Care: $225 per session
    • Session 3: 5-day camp June 24-28 $499
  • Sessions 4 and 5: $999 per session
    • Extended Care: $250 per session
  • Session 6: $699 per session (7-day camp)
    • Extended Care: $175 per session 

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