Backyard Ultra of Northern Utah

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.