The Tevis Cup, also known as the Western States Trail Ride, is the world's oldest modern-day endurance ride, having been held annually since 1955. This grueling 100-mile test of horse and rider takes place across the rugged terrain of the Sierra Nevada mountains. Spectators can catch the start of the action at Palisades Tahoe, where riders gather in the early morning hours to embark on this legendary journey through the wilderness.