Walk off all those holiday cookies at the 3-mile First Day Hike/Walk along Nantasket Beach on Tuesday. The hour-long walk starts at noon at the Mary Jeanette Murray Bathhouse, where hot beverages and light snacks will be served. The route goes along the Nantasket Avenue boardwalk to Kenberma Street and back to the bathhouse. The event is sponsored by the Hull Board of Health and state Department of Conservation and Recreation. More information is available by calling 781-740-1605, ext. 202, or e-mailing Jessica.firstname.lastname@example.org.