Featuring many of Marin County’s most famous trails — Coastal, Miwok, Steep Ravine, Matt Davis and Dipsea — the Tamalpa Headlands 50k presented by the Tamalpa Runners provides a spectacular setting ...

There’s a reason the loop — from Old Mine to Dipsea to Steep Ravine in just under 4 ... There’s also the nearby Matt Davis Trail for an added layer of athletic rigor as it scales down ...