See here for the details about the event.
From the event organizers:
Experience the dazzling light display on two wheels. Bikers of all ages and abilities are welcome to enjoy a leisurely ride. Family and friends may walk with the bikers. All bikers must wear a helmet to participate. Pets are not permitted. Please note that sections of the path are unpaved gravel and there are some hills throughout the course. A bike mechanic and first aid tent will be on-site.
The Symphony of Lights is the largest annual fundraising event benefitting Howard County General Hospital, the only hospital in Howard County. Thank you for your support!