Backyard Ultra of Northern Utah

Mantua, United States • 30 May 2026

Backyard Ultra of Northern Utah takes place at Mantua Reservoir in Mantua, Utah. The centerpiece is a precisely 4.1‑mile loop on the Mantua Reservoir Trail—no out‑and‑backs—designed to keep miles pouring in with seamless yard-to-yard transitions. The trail is flat and fast, with firm dirt and some gravel, and about 20 feet of elevation per loop, making it friendly to first‑timers and experienced ultra runners alike. Runners can enjoy spring scenery, including Mantua’s poppy fields and green farmland framed by mountains, plus nighttime headlamps circling the lake. The event emphasizes a classic Backyard Ultra format, inviting participants to test their limits for as long as they choose. Visit the organization's website for the most recent information.

Race information

4 mi
20 m+
Mantua Reservoir 4.1 Miles Loop
Visit the organization's website for the most recent information.
Trail runs nearby

Run the Antelope Island Fall Classic 50K on October 18, 2025, a scenic one loop around the island starting and finishing at the marina. Expect sweeping lake views, rolling trails and about 31 miles with roughly 3,900 feet of climb.

The Mountain View Trail Half Marathon is an annual fall trail race held on Antelope Island, Utah, offering stunning views of the Wasatch Mountains. The 13.1-mile out-and-back course starts at the Antelope Island Marina and follows the Mount..

Event details The Coldwater Traverse takes place in Ogden, Utah on April 25, 2026. Registration closes on Sunday, April 12 at 11:59 PM Mountain Time. The event listing includes a website at cwtraverse.com. Course and distances The route fol..

Wasatch Scramble Trail Run is a Spartan Trail 10K held at Snowbasin Resort in Huntsville, Utah (3925 Snow Basin Rd). The event is described as a scenic run featuring rugged, winding singletrack at altitude, offering some of the most epic vi..