It begins in downtown Mill Valley with a sprint down Throckmorton to the Old Mill Park, then up three flights of stairs as tall as a fifty-story building, and up some more through an old horse ranch to Windy Gap. Then it plunges down into Muir Woods across Redwood Creek and begins a tough grind up through the trees over trails named "Dynamite" and "Cardiac." At the top of Cardiac, the course levels out before it plunges down through the "Swoop", over the rocks and roots of "Steep Ravine" and the discouragingly steep climb up "Insult Hill." Finally, as the course follows the relatively gentle slope of The Moors toward the ocean, Stinson Beach is in sight a mile ahead. This is where experienced racers resort to secret short cuts and where others racers will sprint the last quarter mile in an effort to move up a couple of places in the final results.