Take a big sniff. Do you smell that? It's the smell of sweat from all those Northlanders getting in their training runs. We're just over a week away from the weekend that draws thousands to Duluth to run, volunteer, cheer, or party for Grandma's Marathon. Ever wonder exactly what goes into Grandma's Marathon weekend? Well, with the help of Bob Gustafson, Grandma’s Marathon Public Relations Director, I'm back again to break it down by-the-numbers.