This two-day event features workshops for students about Native American culture, tribal dancing and drumming, and shopping with Native American traders. Tickets: $5-$8. Kids under 5 admitted free. Waccamaw Siouan Tribal Grounds, 7239 Old Lake Road, Bolton NC. Info: (910) 410-4070 or waccamaw-siouan.net/pow-wow.

This race, which features a 1.2-mile swim, 56-mile bike ride, and 13.1-mile run, begins in Wrightsville Beach and ends across from the USS North Carolina battleship in downtown Wilmington. South End, Wrightsville Beach. For registration and info: northcarolina70.3@ironman.com.

Saturday, 7:30 a.m.-8 p.m.; Sunday, 8 a.m.-4 p.m. The 31st annual Autumn With Topsail Festival features the works of more than 100 regional artists. There will be live music, a beer and wine garden, a food court and more. Admission: $6-$10. Historic Assembly Building, 720 Channel Blvd., Topsail, NC. For info: (912) 312-5244 or autumnwithtopsail.com.

9 a.m.-12 p.m. The New Hanover County Arboretum hosts a sale of houseplants, herbs, succulents and native plants. Proceeds benefit the Ability Garden. Admission: Free. New Hanover County Arboretum, 6206 Oleander Drive, Wilmington. Info: (773) 895-1504 or abilitygarden.org/upcoming-events.