Bellevue—A Mystical, Magical Halloween with Steffan Soule: 6-8 p.m. Oct. 31. Features a magic show by Steffan Soule at 6 p.m., followed by trick-or-treating throughout the mall. Factoria Mall, 4075 Factoria Blvd. S.E., Bellevue.
Bellevue—Wild and Wacky Pumpkin Derby: 1:30 p.m. Oct. 26. Bring a decorated pumpkin (not hollowed out) on wheels to roll down the track. All types of wheels allowed. Pumpkin and costume parade will precede derby. Factoria Mall, 4075 Factoria Blvd. S.E., Bellevue. 425-644-8417 or dmayer@seattleymca.org.
Bellevue—All Hallows Eve Celebration: 5-7 p.m. Oct. 26. Guests can come in costume to enjoy games for all ages, crafts, surprise activities and snacks. Free. Bellevue First United Methodist Church, 1934 108th Ave. N.E. 425-454-2059.
Kenmore—Haunted Trails Celebration: 5:30-10 p.m. Oct. 17-18 and 24-25. Includes Haunted Trails Tour (for ages 8 and older), Trick or Treat Trail, Halloween story time, carnival, Hades Labyrinth, hayrides and more. Cost varies per activity. Bastyr University, 14500 Juanita Drive N.E., Kenmore.
Mercer Island Haunted House: 7-11 p.m. Oct. 24-25. Cost: $7; $5 with a pair of new socks for the homeless. Proceeds benefit youth and social outreach programs. Congregational Church on Mercer Island, 2008 4545 Island Crest Way. 206-232-7800 or www.ucc-ccmi.org.
Sammamish—Nightmare at Beaver Lake: 7-10 p.m. daily (11 p.m. Thursdays-Saturdays), Oct. 24-31. Haunted indoor/outdoor attraction with a medieval theme. Less-scary family hour, 7-8 p.m. nightly. Full-fright tours, 8 p.m.-closing. Cost: $9-$15; $1 discount with donations of nonperishable food items. Proceeds support Rotary Club of Sammamish’s community and international service projects. Beaver Lake Park, corner of Southeast 24th Street and 244th Avenue Southeast, Sammamish. www.NightmareAtBeaverLake.com.
Woodinville—Eastside Gymnastics Haunted House: 8 p.m.-midnight Oct. 31. Scary-but-safe Halloween fun for families. Not recommended for very young children. Hot cider and snacks available. Cost: $7-$10. Eastside Gymnastics, 15100 Woodinville-Redmond Road N.E., Suite 600, Woodinville. 425-486-7429.