Darren Hagen began his driving career in karts at the age of 11. By the time he finished his third season he won more than 90 races including the So Cal Championship, two Tri C Championships, and the California Junior State Championship in Junior Sportsman and Super Box. Darren began racing sprint cars at the age of 15 and midgets at 16. In 2005, he made USAC history by becoming the first driver ever awarded the Rookie of the Year for both sprint cars and midgets in the same season.
In 2006, Darren won the Hut Hundred USAC National Midget Series event at Terre Haute, and earned the title “The Fastest Sprint Car Driver in the World” by running a lap of 146.145 mph at Iowa Speedway. In 2008, Darren won two races at Winchester Speedway, and also won the 2008 Copper on Dirt event. Darren joined the Nine Racing team for the latter part of the 2008 ace season. Darren continues his career running both sprint cars and midgets.