Mount Fremont is a summit located in Mount Rainier National Park in Pierce County of Washington state. It is part of the Sourdough Mountains, a subset of the Cascade Range. Mount Fremont is situated northwest of the Sunrise Historic District, with a popular trail leading to the Mount Fremont Fire Lookout. However, this trail does not reach the true summit, and access is further limited by snowpack closing the Sunrise Road much of the year. July, August, and September are typically the months when the Sunrise Road is seasonally open for vehicle traffic. Second Burroughs Mountain is its nearest higher peak, to the southwest. Precipitation runoff from Mount Fremont drains into the White River.