City of Berwyn issued the following announcement on Aug. 12.
PACE Bus Detour Scheduled for Saturday, August 17th between 8 am and 10 am
Due to the Corrida del Mariachi 5K Run taking place this Saturday, August 17th, Pace bus Route 322 will be detoured between 8 am and approximately 10 am. Regular service in this area will resume once the event has ended.
Original source can be found here.
Source: City of Berwyn