HARLEYSVILLEÂ â With less than one month until the 2021 Penn State IFC/Panhellenic Dance Marathon, Executive Director Katie Solomon of Harleysville has had quite the journey. âOne of my personal favorite things about THON every single year is just the people that it brings together,â Solomon said. âTHON has this weird ability to turn strangers ... into families that are rooted in this common purpose in fighting childhood cancer.â More than 16,500 student volunteers help fundraise each year, according to THON's website. Money raised from the annual dance marathon goes to the Four Diamonds Foundation at Penn State Childrenâs Hospital in Hershey.