GET PSYCHED FOR SUMMER ROAD RACE SEASON AT THE ST. LOUIS COUNTY DEPOT Grandma’s Marathon history exhibit pairs with local Veterans Memorial Hall 5K to kick off Duluth's running festivities. In anticipation of the historic 50th annual Grandma’s Marathon this June, race organizers have officially opened a celebratory historical museum exhibit inside the St. Louis County Depot. Free and open to the public daily from 10 a.m. to 5 p.m., the exhibit chronicles five decades of Nor