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Built on bad decisions in Boulder, CO.

Mammoth Bar Trail Runs

3 Race Events5K, Half Marathon, 10K

Skybreaker Racing

Auburn, California, United States

Mammoth Bar 10K

Mammoth Bar 10K

Sep 7, 2025

Mammoth Bar 5K

Sep 7, 2025

Mammoth Bar Half Marathon

Mammoth Bar Half Marathon

Sep 7, 2025