Get ready to test your limits at the Butterfield Blitz Backyard on May 16, 2026, held at the scenic Butterfield Trailhead Regional Park in Herriman, UT. This unique "Blitz" backyard ultra format offers three challenging timed options: a 4-hour (16.7 miles), 8-hour (33.3 miles), and a demanding 12-hour (50 miles) race. Set against the backdrop of the Oquirrh Mountains, runners will tackle a 4.167-mile loop course, which is 99% trail and 1% fire road, gaining +512 ft of elevation with each circuit. The well-marked single-track trail gradually climbs for the first two miles before descending through dense, beautiful foliage, providing terrific views as you push yourself lap after lap.

What makes the Butterfield Blitz truly stand out is its competitive twist: every loop is timed. While the classic backyard ultra goal is to complete each 4.167-mile loop within the hour, the Blitz format determines placement by total distance, and in the case of a tie, by cumulative lap time, adding a strategic element to your endurance challenge. The start/finish area at Butterfield Trailhead Regional Park serves as your home base, offering ample space for crews and spectators to set up tents and cheer you on in a lively, community-focused atmosphere. Here, you'll find a well-stocked aid station with snacks and Tailwind electrolyte drink, with Great Harvest Bread provided after the 4-hour event and pizza for those tackling the 8- and 12-hour distances.

Typical race day conditions in mid-May for Herriman, UT, feature pleasant highs around 70°F and lows around 44°F, with a low chance of precipitation. This creates ideal weather for continuous running on a course designed for both physical and mental fortitude. All finishers of at least one loop receive a medal, with those completing 12 loops earning a custom leather patch beanie to commemorate their 50-mile accomplishment. Whether you're aiming for a new personal best or simply want to experience the camaraderie of a backyard ultra, the Butterfield Blitz promises an engaging and memorable race experience.