Held on June 12, 2010, this marks the 29th year of the annual Lake Berryessa Swim, which is held at Oak Shores Park, on the west shore of Lake Berryessa in northern California. One-mile and two-mile races were offered for Masters, either with or without wetsuits. Six hundred and two swimmers swam the 1 mile race, and 422 competed in the 2 mile.