Outbound Collective logo


We are a homegrown, grassroots running community that was founded locally in the foothills of the Santa Cruz Mountains and the Marin Headlands. We meet regularly for fun, noncompetitive and social group trail runs in and around the San Francisco Bay Area. There is no cost to join! Check the calendar, bring a friend, and enjoy some of the best trailrunning on the planet!

There are a few variations to this route. Take some time to visit Slacker Hill for great views of SF and the GG Bridge

Serious technical terrain. Not so fast!!

Fill your water bottles at the start. There is no water along the route