San Francisco May 27, 2022 8:08 am Cyclists Start 600-Mile Bike Ride for Cancer, Bone Marrow Registry A 600-mile bicycle trek across California began Friday to raise awareness about bone marrow donors and help save the lives of thousands of cancer patients. US & World Videos 2:34 In the news: Holiday events guide, rain returns, after school program in East San Jose gives back 1:54 In the news: Santa Cruz Wharf collapse, dangerous high surf warnings, one-on-one with SF's new mayor 2:19 Gift card warning to keep in mind this holiday season 1:21 Watch: New HSBC program helps with the American dream 1:41 In the news: SF police shooting, series of storms, free holiday movies at Orinda Theatre