Pawnee National Grassland is a United States National Grassland located in northeastern Colorado on the Colorado Eastern Plains. The grassland is located in the South Platte River basin in remote Weld County between Greeley and Sterling. It comprises two parcels totalling 193,000 acres (781 km²) largely between Colorado State Highway 14 and the Wyoming border. It is administered in conjunction with the Arapaho-Roosevelt National Forest from the U.S. Forest Service office in Fort Collins, Colorado, with a suboffice in Greeley. The grassland contains several hiking trails, including one that allows foot access to the Pawnee Buttes, the most notably geologic feature of the Grasslands.
As seen at http://en.wikipedia.org/wiki/Pawnee_National_Grassland
Sylvan Dale Guest Ranch is located approximately 1 hr and 30 minutes from Pawnee National Grasslands. This would be a great day trip for people who enjoy hiking! There are several trails around the grasslands for people to hike and there is a great trail that allows foot access to take you up to the Pawnee Buttes, the most predominate feature of the grasslands.