The July 31st, 2016 Black Hawk Trail 1/2 Marathon just outside of Black Hawk, CO is a challenging, but exceptionally scenic trail course, held at Golden Gate Canyon State Park. Fabulous race organization and well run events. Tons of climbing and very technical trail running course, with 2900 elevation gain throughout the course, with course starting at around 8537' ft elevation. ERS (Endurance Race Series), always does a good job of having some sort of good food at the finish as well. For a direct link to event, visit the Colorado Half Marathon Calendar page.