Headlands, or so-called turn rows ... “We have to manage those areas, along with ditches, tree lines and field borders, the same as we would in broad crop acres to prevent weeds from spreading, ...

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 ...