Wilton Street Fair/Sidewalk Sale, July 20, 10 a.m. to 4 p.m., Wilton Town Green, 101 Old Ridgefield Rd., Wilton.

Summer Sidewalk Book Sale, July 20, 10 a.m.-4 p.m., Wilton Library, 137 Old Ridgefield Rd., Wilton. Info: wiltonlibrary.org.

Blueberry Festival, July 20, 10 a.m.-3 p.m., Long Hill United Methodist Church, 6358 Main St., Trumbull.

Sheffield Island Pirates Weekend, July 20 and 21, dock at 4 North Water St., Norwalk. Ferry departs the dock at 11 a.m., 12:30 p.m., and 2 p.m. Hosted by the Seaport Association, Norwalk. Tickets: $7-$28, seaport.org/page-18092.

Forest Breathing Walk, July 20, 11:30 a.m.-12:30 p.m., CT Audubon, 2325 Burr St., Fairfield. Experience the healing/restorative health benefits of a therapeutic forest breathing walk, based on the Japanese practice of Shinrin-Yoku, and led by Dr. Roxanne Daleo, a Harvard-trained health educator. Cost: $15-$20. Advance registration required: ctaudubon.org.

Photo Scavenger Hunt, July 21, noon-4 p.m., Milford Arts Council, 40 Railroad Ave. South, Milford. Proceeds go to the MAC. Tickets: $20. Info: milfordarts.org/scavenger-hunt-lp.

Historical bike tour, July 21, 11 a.m., Twin Brooks Park, Brock St., Trumbull to Beardsley Park, 1875 Noble Ave., Bridgeport. Led by local rail-trail historian/author, Sue A. DelBianco. Free. Info: delbiancosue@yahoo.com.

Wilton Food Truck Festival, Aug. 17, 11 a.m. to 7 p.m., Miller Driscoll School, 219 Wolfpit Rd., Wilton. Trackside Teen Center’s second annual Food Truck Festival features food, live music, craft sale and kids entertainment.

45th Annual Milford Oyster Festival, Aug. 17, 10 a.m. to 6 p.m., 1 Shipyard Ln., Milford. Featuring music by Extreme, food, drinks, and children’s activities. Info: milfordoysterfestival.com.

Art in the Park, 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.

Trash Dash 5K plogging event, Sept. 15, 8 a.m., Newman’s Own Hall of The Maritime Aquarium, 10 N. Water St., Norwalk. Plogging is a combination of jogging and picking up litter. Hosted by Keep America Beautiful and The Maritime Aquarium. Check-in: 7-8 a.m. Registration: $30 through July 31, then increases. Registration for children under 12: $20. Info: act.kab.org/trash-dash.