Re:THINK Ice Cream, the Ice Cream for a Healthy Lifestyle, is celebrating its one year anniversary on National Ice Cream Day by offering free samples at participating Bay Area retailers and at the Napa-to-Sonoma Half Marathon. Re:THINK will also offer a free sneak peek of its newest flavor, Black Cherry Vanilla. To add to the celebration, Instagram and Facebook fans will have a chance to win a free case of ice cream!