New this year! Are you up for the ultimate challenge? The Infernal 50k boasts more than 7,000 feet of climbing into this beautiful and very tough course. You will run through beautiful coastal vegetation, climb one of the steepest hills in Northern California (twice!), while enjoying spectacular views of the Pacific Ocean and San Francisco County.

A true test of endurance, the Devil’s Dirty 30k packs a whopping 4,122 feet of climbing into this beautiful and tough 18.1-mile course. This 30k has it all: challenging climbs, long downhills and stellar views from some of the best trails on the San Francisco Peninsula.