K1 Speed in North San Diego kicks off the second half of the 2011 Challenge GP Race Series this coming Sunday July 24th, with an all new track layout for racers to compete on! The Carlsbad facility has been known for having one of the more quicker track layouts, and the quickest indoor kart track in San Diego. The points battle will be up for grabs as reining champ Matt Merrill will have his work cut out for him with a number of very capable drivers all looking for that top podium spot early on in this series. Sign-ups will begin at 630PM and qualifying will start at 7PM with double qualifying rounds and corresponding main event rounds. Entry fee is $50 per driver.