For the last 49 summers, runners and visitors from across the state and country have come to Duluth to be part of Grandma’s Marathon. Those of us who are lucky enough to call Duluth home know this weekend marks more than a race. It’s a celebration of our history as a city on the lake and as a community that cares for one another. At Essentia Health, we’re proud to be part of that shared story. Essentia traces its roots back to the late 19th cent…