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Built on bad decisions in Boulder, CO.

Ultra-Trail Mount Yun

5 Race Events100K, 50 Mile, 100 Mile, 50K, Half Marathon

UTMB

Xiangning, Shanxi, China

Ultra-Trail Mount Yun CMY 70K

Ultra-Trail Mount Yun CMY 70K

Oct 17, 2026

Ultra-Trail Mount Yun DMY 100K

Ultra-Trail Mount Yun DMY 100K

Oct 16, 2026

Ultra-Trail Mount Yun EMY 20K

Ultra-Trail Mount Yun EMY 20K

Oct 18, 2026

Ultra-Trail Mount Yun MMY 50K

Ultra-Trail Mount Yun MMY 50K

Oct 17, 2026

Ultra-Trail Mount Yun UMY 100M

Ultra-Trail Mount Yun UMY 100M

Oct 16, 2026