Guided walk & talk about trees at Grey Towers, 11:30am & 1:30pm, adults $6, seniors $5, youth $3, under age 12 free. 570/296-9630.
Frontier Insurance Bldg., registration 9am, walk 10am. RSVP: alz.org/walk; info: 845/695-2247.
Group riding lesson (1 hour), hands-on educational activity, learn about horses & related topics, arts, crafts & games at Rolling Stone Ranch through 8/31. Sign up for a week or a day. 845/583-1100.
Tour w/ focus on unique architectural details of Grey Towers, 1:30pm, rain or shine, regular tour fee applies. 570/296-9630.
Apocalyptic 5k obstacle race running from brain-hungry, virus-spreading, bloody zombies at Airport Park, free. Vendors, zombies & runners wanted! Facebook.com/MatamorasApocalypse or 570/491-5159.
Hosted by Pike-Wayne License Beverage Assoc. Scholarship at Cricket Hill Golf Club, $50 incl. cart, green fees. Prizes & buffet at Pines Tavern follows. 570/226-9385.
Swan Lake Golf & Country Club, registration 8am, shotgun start 8:30am, $75 incl. lunch, snacks & raffles. RSVP: 845/252-7122. Sponsored by Town of Highlands Lions Club.
Short hike w/ guide teaching birding basics at PEEC, 10am-noon, members free, non-members $5. All ages welcome. RSVP: 570/828-2319.
Walk in the woods at PEEC & identify a variety of birds, 8-10am, ages 12+, members free, non-members $5. Field guides/binoculars provided. RSVP: 570/828-2319.
Sponsored by Rock Hill Vol. Fire Dept. at Tarry Brae Golf Course, lunch & registration 11:30am, shotgun start 12:30pm, $85 incl. lunch, steak dinner & beverages all day. 845/794-1532 or 914/799-0095.