Aspen Snowmass, Colo., Jan. 13, 2015 – Registration is set to open for this summer’s Audi Power of Four races on Wednesday, Jan. 14 at 10 a.m. MST. The Audi Power of Four Trail race is now featured as part of the US Skyrunner Series and is scheduled for July 18 and 19 with a newly added Vertical K race up Aspen Mountain. The Audi Power of Four Mountain Bike Race is in its sixth year and takes place on Saturday, August 1. The race challenges riders on one of the most unique courses in the country. The Audi Power of Four Race Series is a premier endurance race series utilizing the unique and amazing terrain of each of the four Aspen Snowmass mountains – Snowmass, Aspen Mountain, Aspen Highlands and Buttermilk. Each race is designed to test the limits and skills of both elite and recreational athletes while giving them a chance to experience the world-class trails of Aspen Snowmass such as the Government Trail that connects Snowmass and Buttermilk.

The races have continued to grow and take shape over the years. The Mountain Bike race has had storied finishes over the past five years as the competition level continues to grow. In 2014, professional racer Ben Sonntag of Durango, Colo. was the first repeat winner of the Audi Power of Four Mountain Bike race. The Trail 50K attracted some of the strongest runners in the state in 2014 and also saw J. Marshall Thompson of Crested Butte, Colo. defend his title from 2013 by shaving almost 13 minutes of his previous time.

Audi Power of Four Trail 50K, 22K and Vertical K – Saturday, Jul. 18 and Sunday, Jul. 19
The event’s signature race, a 50K Ultra takes place on Sunday, Jul. 19 and covers the four Aspen Snowmass mountains utilizing a mix of single track and road trails. The race has been named to the Skyrunning North American Continental Championships. The course has over 10,000 feet of climbing in 31 miles (50K) beginning at the base of Aspen Mountain, climbing to the Sundeck, and then following single and double-track trails over Aspen Highlands, Buttermilk and Snowmass before finishing at the Snowmass Base Village. The event also offers a 22K race along the famed Government trail covering Buttermilk and Snowmass mountains. New for 2015, as part of the US Skyrunner Series, a Vertical K race on Saturday, Jul. 18 will race up Aspen Mountain. 

Audi Power of Four Mountain Bike Race – Saturday, Aug. 1
The mountain bike race will start at the base of Snowmass and end at the bottom of Aspen Mountain. The race covers an estimated 9,000 feet of vertical gain and 9,000 feet of vertical drop over 36 miles on top rated single track and demanding double track ascents over four mountains. New for 2015, participants will have the option of racing a shorter course that covers two mountains of the route, Snowmass and Buttermilk. The shorter course will cover 17.5 miles with an estimated 3’800 feet vertical gain and 4,200 feet vertical drop. 

Online registration opens Wednesday, Jan. 14 at 10 a.m. at  Registration costs are $90 for 50K Trail Race, $80 for the 22K and $40 for the Vertical K through Apr. 1. Mountain Bike race registration costs are $80 for solo racers, $70 for the half course before Apr. 1. Entry fees for both races will increase after 4/1.  Registration cost includes a Helly Hansen shirt and a gift upon finish as well as race party entrance.

For the course map and additional information visit 

Photos: Photos by Jeremy Swanson for editorial use can be viewed and downloaded here:

Call for Volunteers:
Volunteers are still needed for the event and will receive a goodie bag, lunch and entrance to the afterparty. Those interested in volunteering should contact Deric Gunshor - 

Aspen Snowmass would like to thank the Audi Power of Four race series sponsors: Helly Hansen, Bud Light, GoPro, Clif Bar and Smith Optics.

Aspen Skiing Company operates the four mountains in the Aspen/Snowmass area - Snowmass, Aspen Mountain, Aspen Highlands and Buttermilk - as well as the award-winning Ski & Snowboard Schools of Aspen/Snowmass. The area offers unparalleled nightlife and off-slope activities as well. Aspen/Snowmass is accessible by two of the most convenient airports in the mountains – Aspen/Pitkin County Airport (ASE) (3 miles from Aspen) and Eagle County Airport (EGE) (70 miles from Aspen). For more information on Aspen Skiing Company, please call 800-525-6200 or 970-925-1220, or visit the company’s website at