Don’t miss the best indoor karting competition coming to San Bernardino this Sunday with the Challenge GP Race series at K1 Speed in Ontario, California. The Super Track layout is run in the reverse configuration for this 6-race series and this marks the halfway point for the Inland Empire competitors chasing the overall points championship. Sign-ups will begin at 6:30 PM and racing will begin at 7:00 PM. Double qualifying rounds and corresponding main event rounds give drivers of all skill levels a chance to compete for the win and valuable championship points. Come out this Sunday and see what the excitement is all about! Entry fee is just $50 per driver.