Cycling for a Cure: 10 Bike Races for a Good Cause

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Supermarket Street Sweep

More like a scavenger hunt, the Supermarket Street Sweep is an annual event that benefits the San Francisco Food Bank. Instead of a registration fee, riders buy food along the route.

"Just before the race started, we got a surprise list of grocery stores in San Francisco and what to buy," says Nick Vandehey, 29, a chemist who participated in 2010. It's up to the riders to decide how to get to the stores. At the end, the food is dropped off at a food bank; prizes are awarded for fastest shopping and collecting the most food.

The event, on a Saturday around Thanksgiving, brought in 6,920 pounds of food in 2010.

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