The XTERRA Steep Rock Trail Run is a great way to enjoy the height of summer. Long days, lots of great training, and a festive atmosphere always result in great performances and a lot of fun. Big thanks go to the Steep Rock Association and the Roxbury Land Trust for opening up their parks to us at Steep Rock Preserve. You can choose from four distances - 10K, 25K, 50K and 50 Miler (80K). The course includes a suspension bridge, old railroad tunnel, 19th-century iron ore mines, blast furnaces, granite quarry, scenic overlook, and tranquil established trails.