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Built on bad decisions in Boulder, CO.

The Guzzler Ultra

4 Race EventsHalf Marathon, 10K, 100K, 50K

Those Guys Events

Bardon, Queensland, Australia

The Big Sipper 21km

The Big Sipper 21km

Jul 19, 2026

The Dry Run 10km

The Dry Run 10km

Jul 19, 2026

The Glass Half Full 50km

The Glass Half Full 50km

Jul 18, 2026

The Guzzler Ultra 100km

The Guzzler Ultra 100km

Jul 18, 2026