Have you been enjoying SF Beer Week maybe a little too much? Start your weekend burning some of those hard earned calories on our Sufferfest 10K trail run, optimized to maximize suffering with 6.2 miles of trail and 1,400 feet of climbing. Take in the beautiful vistas of San Francisco and the Pacific Ocean that you would expect to find in the Marin Headlands while you grind up and down those hills. And after all that suffering on the trail, don't worry: Sufferfest Beer Company and Early Bird Tacos will be waiting for you at the finish line with a cold one and delicious a breakfast taco. So grab a friend and hit the trail.