Bicyclists from all over the country are converging on the Bay Area this weekend for a new regional Climate Ride. In past years, the group has passed through Sonoma County on the way from Humboldt County to San Francisco; this year, they’re starting in the city and heading our way, then looping through the Napa Valley on the way to finish at the state capitol. Bruce Robinson has more.

  The Climate Riders will camp near Petaluma tomorrow night, then continue on through the Russian River, Alexander and Napa Valleys. See details on the route and schedule here.