Trail running course through singletrack trails in California, USA
The Canyons Endurance Runs by UTMB

The Canyons Endurance Runs by UTMB 50K

50K·Auburn, California
ultra50kmountaintechnicaltrailqualifierpoint to point

AI-generated image

Distance50K
DateApr 24, 2026
Difficulty4/5

About This Race

The Canyons 50K serves as the gateway distance into the UTMB World Series event held on California's storied Western States Trail. Starting from Auburn, runners follow sections of the historic route that has tested endurance athletes for decades, including technical singletrack through Sierra Nevada foothills and the iconic river crossing that adds both challenge and spectacle to the experience. The distance provides enough trail to engage with the landscape's character without the extreme duration of the longer ultra options. This race draws runners making their first venture beyond marathon distance alongside experienced trail runners seeking a faster effort on technical terrain. The course requires confident footwork on rocky, root-laced singletrack and the ability to manage variable pace across changing elevation profiles. As part of the UTMB World Series, the event brings international-level organization and energy while maintaining the intimate connection to Western States history that makes this stretch of trail significant in American ultrarunning culture. The April timing catches the Sierra foothills in their greenest season, when winter rains have passed but summer heat hasn't yet arrived. Runners experience the trail system that serves as training ground for countless California trail athletes, with aid station support and course marking that reflect UTMB's global event standards applied to a uniquely Californian landscape.

The 50K route covers approximately 31 miles of the Western States Trail system, characterized by technical singletrack that demands attention to foot placement. Rocky sections and exposed roots require consistent focus, while the crossing of the Middle Fork American River provides a memorable mid-race feature that can involve wading depending on seasonal flow levels. The course strings together single-track segments used by Western States 100 competitors, offering runners a taste of that legendary route's technical character in a more compressed format.

Location

Practical Info

Weather

Late April in the Sierra foothills typically brings mild temperatures ranging from the 40s to 60s Fahrenheit, with occasional spring rain possible but less likely than earlier in the season.

Nearest Airport

SMF - Sacramento International Airport

Accommodation

Auburn offers a range of lodging options from budget motels to historic inns, with many runners staying within walking distance of the start area. Sacramento, 35 miles west, provides additional hotel inventory and airport access for traveling participants.

Best For

experienced trail runnersultra runnersmountain runners

Other Distances at This Event

25K

2,789 ft gain

The entry-level distance offering runners a sample of the famous Western States Trail without the ultra commitment. Despite the shorter distance, participants still experience the historic Sierra Nevada foothills and gold rush country atmosphere.

100K

The route follows a challenging out-and-back configuration through the Sierra Nevada foothills between Auburn and Michigan Bluff. Runners encounter the full spectrum of Western States terrain: exposed fire roads through oak and manzanita, technical singletrack requiring careful foot placement, and canyon crossings that test both climbing power and descending control. The course crosses multiple aid station locations twice, allowing crew access at strategic points and giving runners mental waypoints to manage the distance. While specific elevation figures aren't confirmed in available data, the terrain profile mirrors the relentless nature of the Western States course. The route never allows for sustained flat running, instead demanding constant adjustment between climbing and descending through terrain that becomes increasingly technical as fatigue accumulates. Footing varies from smooth dirt to embedded rock, with the latter sections requiring focused attention even from experienced trail runners.

100 miles

The route follows much of the Western States Trail, starting and finishing in Auburn. Runners navigate varied terrain including narrow singletrack through oak and pine forests, exposed fire roads with limited shade, and technical sections along river canyons. The course is well-marked but requires attention, particularly during night hours when familiar trails can feel disorienting.