The Southside Critical Mass community bike ride meets every 3rd Friday of the month at 6:30pm at Nat King Cole Park, located at 8500 S. Martin Luther King Dr. 2015: June 19, July 17, Aug. 21, Sept. 18, Oct. 16 This community bike ride is FREE and open to all families and all ages. We normally travel about 10 miles at a deliberately slow pace. Our monthly ride through the Southside of Chicago is f…