Sunrise at Eatons' Ranch. Founded in 1879, Eatons' is on the old Bozeman Trail along the eastern slopes of the Big Horn Mountains, 18 miles west of Sheridan. Eatons' Ranch was highly recommended by friends as a Dude Ranch I might enjoy. So, after only a year and a half of horse riding lessons, I made my reservations for September 14th of 2008 and drove from Minneapolis, Minnesota area, for 920 miles to my first Dude Ranch. Mountain horse riding was quite an experience, many fears were conquered, and the Big Horn Mountains beauty held me breathless. Kip, the Quarter Horse, was mine for the week as were thrills, new friends and beautiful weather.