The Shannon Ridge Showdown Ultra-Endurance race will be a 16-hour competition and the course itself is approximately 7.5 miles in length with over 1,700 feet of climbing per lap. The course route is a combination of single track, double track, fire access roads and vineyard rows. This is the first time that a USA Cycling Mountain Bike National Ultra Endurance Calendar series race course has included vineyards as part of the course route. The race and course is designed, promoted and directed by endurance racers. Ultra-Endurance racing is one the fastest growing forms of mountain bike racing.