The Brett Gray Ranch is a 50,000-acre ranch currently leased and managed by Round River from the Colorado State Land Board.  In partnership with the State Land Board and The Nature Conservancy, Round River has a three-part goal to maintain a productive and sustainable ranching operation, encourage science and stewardship that maintains biodiversity and a sustainable prairie ecosystem, and to support education and community outreach to appreciate and support effective conservation of prairie ecosystems through responsible ranching.

Access is restricted to foot traffic only from designated parking areas. OPEN: Sept. 1–end of Feb.