The 2017 Terra Firma Series kicked off at Milestone MX Park today in the scorching heat that’s been cooking the SoCal area for the past week. Despite the heat and humidity, over 480 entrants showed up to do battle on a pair of all-new tracks at Milestone, once again proving that the TWMX Race Series presented by SPY is the premier race series on the West Coast. Check out some of the action from today’s race!