First ever race to the top of Stewart Mountain! The Stewart Mountain Half Marathon start at North Lake Whatcom Trailhead (Hertz Trail). The half marathon runs along the beautiful & blue lake Whatcom before heading up Stewart Mountain for a partial out and back, and MY OH MY the views are sweet! The race descends by taking a single track trail after some logging roads with stunning views of Lake Whatcom and Bellingham. Runners will enjoy forest and lake views throughout the race.