From Lewistown, MT, take US Highway 87 west to the Glengarry turnoff. Exit south onto Glengarry Road. At the T at Glengarry -road signs are here - turn right onto McMillan Road. Continue to the fork just over the hill. Turn left onto Beaver Creek Road. Stay on Beaver Creek Road for 12.5 miles. A mile before arriving at the Olsen Ranch, you will come to a T. Take a left.
At the main forks, there are yellow and black Montana Bunkhouse signs that point the way. A sign is also at the entrance to the ranch headquarters.