It's almost entirely single track trail, about one mile of it is on pavement. Roughly 3,000 ft of elevation gain and 3,000 ft of elevation loss. The last mile has 600 ft of gain. Fortunately the smoke in that area is supposed to break tomorrow or Friday, just in time for the races. It's the first time this race has been held, but it seems well organized so far, with 300 people signed up between the 50k, 20 mile, and half marathon distances.