Eighth Annual Swing-a-Ring Day

Moving across Hudson Beach’s traveling rings—spaced about eight feet apart and hanging from a hefty support beam—is a workout for even the burliest of grown-ups. But tykes under 12 can attempt a junior set (with parents’ help), take advantage of an individual lesson or ramp up their circus skills with free unicycling, juggling, slacklining and stilt-walking lessons. Sand sculpting, table tennis, tetherball and a Double Dutch jump rope demo will satisfy those who prefer to stay firmly on the ground. Free Good Humor ice cream bars sweeten the deal. All ages.