The Zane Grey Highline Trail 50 mile Endurance Run, known commonly as the Zane Grey 50, is a 50-mile (80 km) ultramarathon that takes place on the Highline Trail in the Tonto National Forest just below the Mogollon Rim in central Arizona. The race is typically held on the 4th Saturday inApril. The race starts at the Pine Trail head on the far west end of the Highline Trail, just south of the Town of Pine, Arizona. The race travels east and finishes at the 260 Trailhead, just east of the town of Christopher Creek. Runners climb cumulative total of over 10,000 feet (3048m) and descend a total of over 9000 feet (2743m). The actual distance is closer to 55 miles. The race begins at 5:00 AM and continues through the day with the last runners finishing around 9:00 PM.