A legendary 100-mile mountain challenge through the heart of Colorado’s San Juan peaks
The Hardrock Hundred Endurance Run is one of the most iconic ultramarathons in the world. It is more than a race, it is a rite of passage in the high country. Runners travel through rugged alpine terrain, historic mining towns, and some of the most breathtaking landscapes on earth while testing their endurance, grit, and spirit.
The race is known for its wild beauty, its extreme altitude, and its tradition of finishing by kissing the painted ram’s head on a block of mining stone in Silverton. Hardrock draws a global community of athletes, volunteers, and adventurers who come together each July to celebrate the mountains and the toughness it takes to traverse them.
<p>Hardrock supports San Juan community organizations, Silverton Medical Rescue, and the Joel Zucker Memorial Scholarship, which provides funds to local high school and continuing education students.</p>
Disclaimer: We make every effort to provide accurate and up-to-date information on Kåduka, but details may change. Please always confirm the latest information on the official race website. See something that needs correcting? Send us a note at feedback@kaduka.app

