As a way to raise money for cancer research, ZD Wines hosts a fundraising bicycle ride, wine tasting, and dinner. One hundred percent of the revenue goes to various cancer fighting charities. The Crush Challenge starts with professional bicyclists riding with mortals on a 27 or 38 mile trek through the Napa Valley. They then head to ZD for lunch and wine. The day is capped off with a dinner catered by four chefs each preparing his own course. And wine of course.