The Southern Bicycle League takes a slight detour from the traditional holiday gluttony to celebrate the season with some actual physical labor. And who couldn't use a reason to work off those holiday pounds? The league trolls local neighborhoods on two wheels for the biggest and brightest holiday light displays in its annual CHRISTMAS LIGHT RIDES, a weeklong series wrapping up its final days Wed.-Fri., DEC. 17-19. Closer to a beach cruiser pace than a Tour de France one, the rides tour neighborhoods including Buckhead, Vinings and Decatur, while offering Atlantans an opportunity they may not otherwise get sitting in traffic. Headlights and taillights required for bicycles. Free. See website for locations and times. www.bikesbl.org.