Courtney Dauwalter, 41, smashed the women's clockwise course record at the Hardrock 100, completing the brutal 100-mile mountain ultramarathon through Colorado's San Juan Mountains despite significant stomach problems that plagued her overnight.

Dauwalter's new record time bested the previous women's clockwise mark, showcasing her ability to push through gastrointestinal distress during one of ultrarunning's most demanding events. The Hardrock 100 features over 33,000 feet of elevation gain across high-altitude terrain, making it one of North America's toughest ultramarathons.

"It was really hard," Dauwalter said, acknowledging the physical and mental toll of battling nausea and digestive issues while maintaining race pace through the night. Stomach troubles represent one of the most common obstacles ultramarathon runners face during extended efforts. Factors like altitude, dehydration, gut movement during extended running, and electrolyte imbalances frequently cause GI distress in endurance athletes.

Dauwalter's performance demonstrates the mental resilience required in ultrarunning. Managing nutrition, hydration, and pacing while sick demands race experience and strategic problem-solving. Elite ultrarunners often adjust their fueling strategy mid-race, switching between different fuel types or reducing intake if their stomach rejects standard race nutrition.

The Hardrock 100 limits entry to just 140 runners annually based on previous ultramarathon credentials, making it one of ultrarunning's most competitive and prestigious events. The clockwise course direction requires runners to handle a specific sequence of elevation challenges that differs from the counterclockwise route.

Dauwalter's record adds to her extensive ultrarunning resume. Her achievement underscores how modern ultramarathon success relies not just on aerobic fitness and