The Knobby Rock Gravel Grinder is a gravel bicycle event that highlights an incredible series of dirt loops in the heart of the Green Mountains and traverses through the scenic Moosalamoo National Recreation Area. The ride starts as a mass start from the iconic Blueberry Hill Inn and Outdoor Center located in the heart of the Moosalamoo forest. The course is primarily hard packed gravel and dirt roads and a few short sections of multi-use trail.