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Ultra-Trail Mount Yun by UTMB

Ultra-Trail Mount Yun by UTMB 50K (48K)

50K (48K)
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Distance50K (48K)
Date16 Oct 2026
StatusOpen
Difficulty3/5

About This Race

Ultra-Trail Mount Yun by UTMB brings the renowned global trail running series to one of China's most storied mountain regions. The 48-kilometer distance sits in that compelling middle ground where runners can push hard without the multi-day recovery of longer ultras, making it accessible to first-time ultrarunners while still offering a genuine test for veterans. Mount Yun's terrain reflects the geological and cultural complexity of the region, with trails weaving through landscapes that have drawn pilgrims and poets for centuries. As part of the UTMB World Series, the event follows the organization's established standards for course marking, aid stations, and timing while embracing the distinctive character of its Chinese setting. Scheduled for October, the race takes advantage of China's autumn running season when temperatures moderate and visibility tends to improve. The 50K category serves as the middle option in the Mount Yun series, offering a substantive challenge without requiring the specialized training and recovery protocols of the longer distances.

The 48-kilometer route explores Mount Yun's trail network through terrain that shifts between forested sections, exposed ridgelines, and passages through areas of cultural significance. Specific elevation gain data is not currently available, though runners should expect considerable vertical given the mountain setting and ultra designation.

The course design reflects UTMB's approach to creating routes that balance physical challenge with opportunities to experience the landscape. Aid station locations and cutoff times follow the organization's standards for runner safety and support.

Location

Practical Info

Weather

Mid-October in the region typically brings comfortable temperatures for running, though conditions can vary significantly with elevation and mountain weather patterns should be anticipated.

Accommodation

Race logistics and accommodation details will be published on the official UTMB Mount Yun website as the event approaches.

Best For

ultra_runnersmountain_runnersexperienced_trail_runners

Other Distances at This Event

20K (22K)

1,500m gain

The most accessible distance option while still delivering a genuine mountain trail experience. This 1 Running Stone route introduces runners to Mount Yun's natural beauty and cultural significance in a more manageable format.

70K (68K)

The route traverses Mount Yun's mixed terrain, moving between established trails, forest paths, and technical sections that characterize the region's topography. Runners should expect a course that tests both technical skills and endurance management, though specific elevation profiles vary by year as the organizing team refines the route. As with all UTMB World Series events, the course will be marked to international standards with aid stations positioned at strategic intervals. The mixed terrain classification indicates runners will encounter variety throughout the distance, from runnable sections to more technical passages requiring careful footing.

100K (97K)

The 97-kilometer route covers the full range of Mount Yun's terrain features, from protected forest sections to exposed ridgeline passages. The course includes technical segments through ice cave areas that require careful footing and headlamp management during low-light hours. Specific elevation data has not been published, but the terrain mix indicates sustained climbing and descent across the mountain range.

100 miles (161K)

The 161K route provides a complete tour of Mount Yun's topography, transitioning between forested singletrack, rocky ridgeline traverses, and sections through the mountain's ice cave systems. Terrain varies from soft forest floor to technical rock gardens requiring careful foot placement. The mixed surface demands versatile footwear choices and adaptability as conditions shift throughout the route.