SFGate.com:

Trips for Kids, a Marin County-based program that provides bicycling experience and job training for young people, is gearing up for its Trips for Kids Bike Swap and Sale. The event takes place 10 a.m. to 4 p.m. Saturday at Mill Valley Middle School, 425 Sycamore Ave. Hundreds of bicycles, from basic two-wheelers to top-of-the-line machines, will be on sale, as will as clothing, accessories and other items. The swap and sale will benefit the Trips for Kids youth mountain-biking and job-training programs. For information, visit www.tripsforkids.org.