Utah Motorsports Campus is a race track facility located in Grantsville near Tooele, Utah, United States. It operated under the name of Miller Motorsports Park from 2006 until October 2015. The course has hosted auto, motorcycle, bicycle and kart racing, along with corporate events. Track The Full course is a 23-turn (28-apex), road circuit run counterclockwise. The front stretch can see vehicles reaching speeds of . Smaller configurations of the track can be made from the full course, including a outer course that does not use the tighter infield lay-out, as well as two layouts that each use half of the full course and can be run simultaneously. The Full course was the longest road racing facility in North America until the 2014 extension of Thunderhill Raceway Park. It is about longer than the previous holder, Road America. The Outer course is one of the fastest road courses in North America, with AMA Superbikes posting average speeds over . During the annual Tour of Utah bicycle race, the park is known for hosting the tour's "trademark" time-trial stage. History This track was originally conceived as a novelty track for Larry H. Miller, owner of the NBA's Utah Jazz and various automobile dealerships in the area, with a budget of about $5 million. Due to enormous local motorcycle and auto industry support, the concept gradually grew into a $100 million-plus project, one of a kind in the U.S. The track was designed by world-renowned track designer Alan Wilson. The kart track was opened in September 2005 and the large track was opened to the public on April 1, 2006, when APEXtrackdays ran the first motorcycle track day. In 2006, the track's first year of operation, it hosted the Utah Grand Prix with the American Le Mans Series, a Honda Summit of Speed AMA Superbike double-header event, and the Discount Tire Sunchaser, a nine-hour endurance race of the Rolex Sports Car Series. The Sunchaser was shortened to for 2007 and 2008, and to for 2009 and 2010. The track is also host to a WERA Grand National motorcycle road racing event and the regional motorcycle road racing series Masters of the Mountains, promoted by the Utah Sportbike Association. The facility was named Motorsports Facility of the Year on November 8, 2006, by the Professional Motorsport World Expo in Cologne, Germany. On July 14, 2007, the track hosted its first NASCAR event with