The non-resident 8 a.m. registration opening, the day after residents (Thursday, February 5 for 2026).
Thornton's own youth and teen programs page lists staggered registration for its Partial-Day Kid Camps, Full-Day "Escape to Adventure" and "Counselor Cadet" summer programs: "Registration opens at 8 a.m. on Wednesday, February 4, for Thornton residents and Thursday, February 5, for non-residents." We watch for next season's dates and alert at both openings.
Updated , checked by hand against the target's own page.
Watched from thorntonco.gov, the target's own public page — not a reservation system we poll.