The National Ultra Endurance Series (NUE) is not a race organizer but rather a race series in which there are more than a dozen of some of the best endurance mountain bike races in the country under the Endurance Series. For those who wish to compete in the series, riders have the opportunity to go to multiple states throughout the calendar year to bike in the affiliated NUE events from Virginia to Washington and race to have the opportunity to win cash prizes. I would say though for many of the NUE racers that compete in the series it is much less about the money than it is about the absolute high quality of the races themselves as well as the NUE races attracting the fittest mountain bikers in the United States and from around the world. NUE events are truly at the tip of the spear when it comes to endurance mountain biking races.