McGraw Ranch, Historic ranch in Larimer County, United States.

McGraw Ranch is a historic dude ranch in the Cow Creek valley near Estes Park, Colorado, within Rocky Mountain National Park. It was established by Peter J. Pauley Jr., who built a barn on his 160-acre =Y Ranch in 1884. The McGraw family later added several cabins, and the property remains the only intact dude ranch in the park.

Peter J. Pauley Jr. built a barn and ran 2,500 cattle on his 160-acre =Y Ranch in 1884. Hugo S. Miller and Henry C. Rouse expanded it to 1,000 acres before the McGraws bought it in 1909 and changed the brand to =X. Irene McGraw converted it to a guest ranch in 1935–36, and it was listed on the National Register of Historic Places on 17 September 1998.

The ranch takes its name from John J. and Irene McGraw, who bought the land in 1909 and changed its cattle brand to =X. Under the motto "Ranching with Ease" the family ran it as a guest ranch until 1973, and it is the only intact dude ranch in Rocky Mountain National Park.

The visitor experience is limited since the ranch primarily serves as a research center for scientists working in the park. Check ahead about which areas are accessible and what guided tours are offered, as availability is restricted.

The ranch shifted from a tourist destination to a research hub supporting scientific work within the national park. This transformation shows how historic sites take on new roles for education and conservation today.