Recommended Users: Mountain Bikers, Hikers, Equestrians. Two-track trail. 0.23 miles in length. Difficulty: Easy/Easiest. The Adit trail was created to connect the Leeds Reef, White Reef, and Tipple trails. A 3.4 mile loop is possible. See the Leeds Reef Trail or the White Reef Trail for more details. The section of Adit Trail between Leeds Reef Trail and White Reef Trail is composed of soft clay soils favored by the endangered Shivwits milk-vetch. In fact, the trail passes between two fences that protect the milk-vetch from intrusions.