C.R.S. § 33-12-106.5
33-12-106.5. Alternative means of park entrance - fees - rules
33-12-106.5. Alternative means of park entrance - fees - rules. (1) An individual entering a state park or state recreation area by means other than by motor vehicle must purchase a pass in accordance with commission rules.
(2) The commission, by rule, shall establish fees for passes for individuals entering a state park or state recreation area by means other than by motor vehicle. The commission may establish exemptions from such fees.