One of Butler County’s most popular fall traditions, Mars Applefest, will take over downtown Mars on Saturday, Oct. 4, from 10 a.m. to 4 p.m. The festival draws more than 9,000 visitors each year with more than 150 vendors, live music, kids’ activities, and an array of food options. Admission and parking are free, with shuttle service available from Vogel’s Disposal on Brickyard Road.