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Mill Lake Trail (#136) is 2.5 miles/4kms. (one-way) and is a more difficult trail. The trail follows Mill Creek for much of the way. The shallow lake is located in a picturesque basin. Prairie Creek can be difficult to cross during high water in the spring and early summer.
General Information
Directions: Drive north of Ketchum on Highway 75 for 18.5 miles. Turn left (west) at Prairie Creek Road #179. Follow this raod 2.5 miles to the trailhead.