Dog Jog to benefit the Barrington Area Council on Aging. Two-mile timed run, a one-mile fun walk, and four contests for pets: Best Costume, Most Unique Trick, Longest Tail, and Shortest Tail. Registration begins at 7:30 a.m.; the two-mile run will begin at 8:30, the one-mile walk at 9 a.m. and the pet contests at 9:30 a.m. For a registration form, call BACOA at (847) 381-5030 or download a form from www.bacoa.org.