Horseback riding lessons, boarding, training and sales on Long Island. Stanhope Stables has been around for many years, providing a premiere location for equestrians to practice the sport they love. With over 75 stalls, several grass and dry paddocks, and 4 horseback riding rings, Stanhope is the perfect place for horses and riders of all disciplines and levels. We focus on quality horse care and the best level of service for both horse and rider. Stanhope Stables is owned and operated by Nancy Henderson, a lifelong equestrian who continues to ride and train on the property. Nancy is joined by many equestrian professionals who offer horseback riding lessons, training, leases and sales on the property.