Smartwool has been a proud supported of the Hardrock 100 Endurance Run for over a decade. Founded in 1994 in Steamboat Springs, CO, Smartwool was the first outdoor company to create performance Merino wool ski socks, revolutionizing the category and forever changing the way outdoor enthusiasts viewed their feet. Since then, they have continued to innovate and perfect their craft, pushing the boundaries of what's possible with Merino wool. Merino wool is the key ingredient in almost every item they make. It's soft, manages moisture, regulates temperature, and resists odors. Merino wool is what makes Smartwool's base layers, hiking socks, running socks, and other outdoor apparel so incredibly comfortable and effective in any condition. For a race like Hardrock, you can only go so far with a great pair of socks - you need a great pair of shoes to go with it. That's why Smartwool has teamed up with Altra to be the co-presenting sponsors of Hardrock.

Altra® Footwear was created by runners for runners in the steep, rocky Wasatch mountains of Utah. Altra was founded by Golden Harper, Brian Beckstead and Jeremy Howlett in 2011, and their distinctive FootShape toe box and Zero Drop™ sole was an immediate hit with the ultra-running community, who necessarily spend continuous hours on their feet. In just a little more than 4 years, Altra has become the third largest trail shoe brand in the Run Specialty channel and now has 3 of the top 10 selling shoes in the industry, according to research from NPD.

Altra’s passionate and committed team has produced an award-winning trail running line. These Hardrock®-ready shoes include the Superior™, Lone Peak™, and Olympus™ models, and all have the Altra-invented Gaiter Trap™ system to keep out those San Juan rocks! With mountains built into its DNA, Altra is thrilled to be part of Hardrock 100 Endurance Run.

Tailwind Nutrition was founded by endurance athletes in Durango, CO. Its product, Tailwind Endurance Fuel, is designed to overcome the nutrition problems faced by endurance athletes in events like 50's, 100's, 24-hour, and multi-day epics. Tailwind combines complete fuel, hydration, and electrolytes in a tasty drink that won't turn your stomach into a brick. Hydration pack and bottle friendly, Tailwind Endurance Fuel is available in four flavors and an unflavored version. All you need, all day. Really.

Based in Denver, Colorado, The North Face offers unrivaled, technically advanced outdoor products designed for everyone from the most accomplished climbers, mountaineers, snowsport athletes, and endurance athletes to novice explorers in search of adventure.

They are committed to pushing the limits of innovation and design so that you can push your limits in the San Juans and beyond.

The North Face is also our 2025 Lottery Livestream sponsor.

At Kahtoola, they combine their love for the outdoors with their love for technology and design. This formula results in products that they believe will exceed expectations and help outdoor enthusiasts achieve a new level of adventure.
They’re convinced a healthy mind is fueled by an active lifestyle, and Kahtoola can help you achieve your goals, whether you’re hiking, running, mountaineering or simply walking your dog.

Suunto was born in 1936 when Finnish orienteer and engineer Tuomas Vohlonen invented the mass production method for the liquid-filled compass. Since then, Suunto has been at the forefront of design and innovation for sports watches, dive computers and sports instruments used by adventurers all over the globe. From the highest mountains to the deepest oceans, Suunto physically and mentally equips outdoor adventurers to conquer new territory. Suunto's headquarters and manufacturing plant is in Vantaa, Finland, where its products are designed and handcrafted with pride. Because of the importance of possessing mountaineering, wilderness survival and navigation skills at the Hardrock Hundred Mile Endurance Run—as well as Suunto’s heritage in adventure—the race organizers saw Suunto as the ideal partner for the event. Suunto boasts an extended offering of navigational and multisport tools, including the Suunto 9 Baro watch, whose 120-hour battery life in GPS mode, navigation capabilities and training features making it the ideal companion for Hardrockers.

For over 40 years, Nathan has provided best-in-class essentials designed to help runners enhance and improve their performance, mile after mile and year after year.
Their hydration vests and handhelds, waist and running packs, safety gear and apparel, offer a perfect balance of form, fit and function for athletes at all levels. When facing the rigors of the Hardrock 100, you want what matters most – intuitive design, comfort, quality and smart storage.
As the market leader, and inspired by your journey, Nathan continues to strive to offer runners the best, purpose-driven solutions to have their best runs.
Nathan products are available online as well as specialty running shops, outdoor retailers, and sporting goods stores in 45 countries and counting.

For more than a decade, iRunFar has brought the front of each Hardrock 100 to phone and computer screens around the world, seemingly by magic. From learning on lottery day who'll face off at the next Hardrock, creating handfuls of pre- and post-race interviews, its exhaustive live race coverage from the San Juan Mountains’ peaks and passes, and on through the awards ceremony, iRunFar is there to share the incredible journey that is Hardrock with all of you.

Originally created to heal damaged skin, Squirrel's Nut Butter is a superior anti-chafe and restorative skin salve. Using only a handful of ALL NATURAL ingredients, SNB reduces skin inflammation and irritation. Used from head to toe, SNB puts an end to your post-race shower yelps! Handmade in Flagstaff, Arizona.

Hypoxico is the world leader in altitude simulation equipment and training services, and their systems are used by athletes and mountaineers for performance enhancement at altitude and at sea level. Hypoxico offers a wide variety of altitude training products including Sleeping Tent and Sleep Mask Systems, Stationary exercise training equipment, as well as Intermittent Hypoxic Training (IHT) equipment which offers altitudes up to 21,000ft. Users can expect almost complete acclimatization to altitude, improved endurance, and enhanced recovery.

Method Seven UltraTrail makes Experience Optics. Unlike most sunglasses, which are typically about fashion and often darken and distort, Method Seven (M7) glasses are designed to enhance your vision and overall running experience. UltraTrail features include advanced notch filtering for exceptional optical quality and superior peripheral vision, unique 30% partial polarization for better trail definition, ultra-lightweight titanium frames (the lightest glasses you’ll find!), infrared protection in addition to typical 100% UV protection, and slip-free temple tips and "no tangle" nose bridges for women. The result is a lens that is brilliantly bright allowing more of the most useful wavelengths of light to your eyes and brain, comfortably and safely. More light means more information to make faster and better decisions for unmistakable foot placement, especially when it comes to technical terrain like the Hardrock 100 course. M7’s UltraTrail glasses are the most unique and best choice for a trail runner. Unmistakable and proven.

At Natalie’s, they want the quality of their ingredients to shine. That’s why they hand select & source the finest fruits & vegetables available. Rooted in hand-picked fruits and vegetables, their juices are handcrafted in small batches to ensure authentic freshness. They specialize in making clean, nutritious juice made with integrity. For the last 30 years, Natalie’s has served a world class product dedicated to feeding families a source of authentic nutrition. Producing fresh, clean-label juice has been a labor of love for their family. Today, they are proudly women-owned & family-driven. Natalie’s has won over 10 National Taste Test awards for quality and nutrition by publications such as Cook’s Illustrated, Bon Appetit, Woman’s Day, Good Housekeeping, Real Simple, and more.

Get Steep, Run High. AKA Aravaipa Running. You've seen the cute ram t-shirts all over town, with the tongue-in-cheek admonishment to "get high". That's the brainchild of Jamil Coury and his events company Aravaipa Running.

Driven by the philosophy of “Keep Innovating”, NITECORE has led the industry with 18 years of innovation. Specializing in outdoor lighting, NITECORE has introduced a range of lightweight trail running gear, including headlamps and carbon fiber power banks, which meet the mandatory gear requirements of many trail races and have gained widespread popularity within the trail running community. NITECORE chose to collaborate with the Hardrock 100 because of its immense recognition and influence within the global trail running community. As a leading global lighting brand, they aim to showcase our innovative products to more passionate trail runners and enthusiasts. Through this partnership, they also look forward to expanding their brand’s reach in the North American market.

Maurten is the Official Nutrition Partner for the Hardrock Hundred Mile Endurance Run — providing fuel on course to ensure runners get the carbohydrates they need to perform. Combining research–driven development alongside athlete feedback to enhance performance, Maurten has fueled the fastest. With a sports fuel range built on patented Hydrogel Technology, it enables runners to more easily consume high-carbohydrate fuel during training and racing.

It’s simple — carbohydrates are the currency of fueling. Athletes need to consume them when training and racing — but they can cause stomach issues. Maurten's innovative technology allows for the hydrogel to encapsulate the carbohydrates and carry them through the stomach to be absorbed more easily. Maurten will be there to fuel the community with Hydrogel Technology from the start — through all 102.5 miles — until kissing the Hardrock.