Free Trunk or Treat at Good Samaritan Hospital, October 25, 2025, 3:00–5:00 pm, featuring family activities, robots, DJ Bob, and a Golden Ticket contest.
Ride BART's Halloween Train + Trunk or Treat (Dublin/Pleasanton to Lake Merritt)
Families can ride a decorated Halloween Train from Dublin/Pleasanton to Lake Merritt on October 28 for free trunk-or-treating and activities; RSVP required.