This is our pick of the best of the burbs. For more information, go to www.boston.com .
Essex: At the 31st Annual Essex ClamFest, restaurants serve their favorite chowder recipes from noon to 2 p.m. All-day activities include crafts, music, and a kids’ area. Saturday, 11 a.m. to 4 p.m., Memorial Park, Martin St. Chowder tasting admission $5. www.visitessexma.com.
Lowell: Merrifest — A River Festival on the Merimack River features live music by SIX, food, kayak races, and more. Saturday, 11 a.m. to 3 p.m., DCR Heritage Park, 500 Pawtucket Blvd. Free. www.merrimack.org.
Marblehead: Marblehead Arts Masquerade Party is a Halloween-themed masquerade party with treats, a cash bar, and entertainment. Prizes for best mask and best costume. Saturday, 7 to 10 p.m., Marblehead Arts Association, 8 Hooper St. $35. 781-631-2608, www.marbleheadarts.org.
Medford: Country music artist and television personality Kellie Pickler will perform. Friday, 7 p.m. Chevalier Theater, 30 Forest St. $41, $54, and $68 plus $1 per ticket for theater restoration fee. 781-396-6645, www.ticketforce.com
Wakefield: Emma’s Revolution will perform Friday, 8 p.m., at the Wakefield Unitarian Universalist Church, 326 Main St. $25 . 781-245-4632, www.uumassaction.org/uuma/emmasrevolution/.Submit items directly at www.boston.com/addevent.