TN Spring Series Continues in Chattanooga, Saturday, March 21 - Atomic & Masters March 16, 2015 Evelyn Radford The Atomic Juniors and ORRA Masters will be competing in the 2nd race of the Sprint Series this weekend in Chattanooga. Races will be running from ~11am to 6pm on Saturday, March 21. Masters! Please remember to update the race Doodle for this event.Check out the Calendar/General Calendar for all events coming up!!