Yosemite Valley Stable Yosemite Valley Stables offers two exciting guided rides throughout the season. They include: The two-hour ride to Mirror Lake, which is perfect for beginners looking for unique photographic opportunities. The half-day ride, which takes the adventurous up to Clark’s Point and offers excellent views of Vernal Fall. Please note: This trail is often uneven, and consists of many switchbacks up a steep slope, with an elevation gain of 1500 feet. This is a strenuous ride best suited to riders in good physical condition. The Yosemite Valley Stables is open for the season. Pease arrive at least one hour prior to your ride. Get more information on mule and horseback rides here. Riding excursions are popular activities. Reservations are strongly recommended. For reservations, or more information about any of our Yosemite stables services, please call (209) 372-8348. Tweet