For a month associated with spooky ghosts and haunting horsemen, the remaining weekends in October are filled with a plethora of Halloween-themed activities. One event in Gainesville estimated to draw more than 5,000 to the Midtown Greenway is the annual Trick-or-Treat on the Trail. For the fourth year in a row, children wearing costumes will fill the park, going door-to-door to fill their bags and buckets with sweet, sugary treats.