Sierra Prieta

Sierra Prieta 50K takes place on August 15th in Prescott, Arizona, United States, inviting runners to explore the challenging terrain of the Sierra Prieta mountains. The event begins at the White Rock Trailhead and features a rigorous course that spans 31.5 miles with an elevation gain of over 5,500 feet. Participants will encounter three prominent sections of the mountain range: Thumb Butte, Quartz Mountain, and Wolverton.
Race morning in Prescott typically sees clear skies and warm temperatures, ideal for trail running but demanding on endurance athletes due to high UV exposure and firm yet slightly soft trail conditions. The race starts promptly at dawn when temperatures hover around 65°F, rising steadily throughout the day with peak heat reaching about 90°F by mid-afternoon.
Presented annually since its inception in 2018, Sierra Prieta is a cornerstone event for ultrarunners and endurance enthusiasts alike. With three aid stations located at critical intervals along the route—mile markers 6.5, 15, and 23—the race offers strategic rest points to help participants manage their energy levels throughout this demanding course. The Hike Shack and Saddles 100 are proud sponsors of Sierra Prieta, supporting both runners and local conservation efforts.
The rugged terrain of the Sierra Prieta mountains presents a unique challenge with its steep climbs and varied landscapes. Runners will traverse through diverse trail surfaces, from firm earth paths to slightly soft sections that require careful footing. The course is designed for experienced ultrarunners who are prepared for long hours on their feet amidst stunning natural beauty.
Weather conditions during the race in Prescott usually feature clear skies with a UV index of 7.0 (High) and trail conditions described as firm but slightly soft underfoot, requiring runners to be mindful of sun protection and footwear choices. The cut-off time for participants is strict at three miles per hour throughout the entire course.
Sierra Prieta offers one distance: 50K

To register for Sierra Prieta, interested runners can visit https://ultrasignup.com/register.aspx?did=136058. The entry fee of $150 covers all race-day amenities and support services provided by the event organizers. Registration closes on July 27th.
Bib pickup will be held at the Hike Shack in Prescott, Arizona from August 9th to 14th between 9 AM and 6 PM each day. Runners must bring a valid photo ID for verification purposes during this process.
The race begins precisely at dawn at White Rock Trailhead on August 15th. Participants are required to be over the age of eighteen due to the rigorous nature of the course. It is recommended that first-time runners arrive prepared with appropriate gear, including hydration systems and sun protection measures given the challenging trail conditions and high UV exposure.
Sierra Prieta 50K in Prescott, Arizona on August 15th offers a compelling challenge for endurance athletes looking to test their limits against the Sierra Prieta mountains. The race's unique course through Thumb Butte, Quartz Mountain, and Wolverton sections presents not only physical but also scenic rewards that make it worth every step taken by runners eager to push themselves in one of Arizona’s most iconic trail races.