Wilton Back the Track Trot: Fund-raiser 5K Run and Fun Run, Aug. 24, 9 a.m., Wilton track facility, 395 Danbury Rd., Wilton. Fee: $35. Info: runsignup.com/Race/CT/Wilton/BackTheTrack.
Art in the Park Annual Festival, Aug. 25, 10 a.m.-4 p.m., Weir Farm, 735 Nod Hill Rd., Wilton. This free annual event celebrates the birthday of the National Park Service and the creativity inspired by Weir Farm. Enjoy demonstrations, activity stations, free-to-use art supplies, refreshments, music, and more. Info: nps.gov/wefa/planyourvisit/art-in-park.