RunJunk. com is an online retailer focused on endurance and running products, serving athletes since 2005. Run by endurance athletes for endurance athletes, the company offers equipment and supplies for a range of activities and experience levels—from preparing for a first 5K to training for an international marathon or triathlon.

Its product range includes sports nutrition for before, during, and after exercise, such as energy bars, drinks, gels, chews, supplements, electrolytes, and recovery products. Runners and other active customers can also shop for hydration belts, handheld bottles, hydration packs, race belts, and water bottles, alongside compression apparel, clothing, footwear, socks, and accessories. Additional categories cover massage and stretching tools, injury prevention and relief, training watches and heart-rate monitors, reflective gear, lights, cycling and hiking equipment, and gifts.

RunJunk. com carries products from brands including Nathan, FuelBelt, Geigerrig, 2XU, Zensah, Pro-Tec, and 110%. The retailer ships domestically and internationally and provides customer support, account services, and information on shipping and returns through its website