Backyard Ultra of Northern Utah

MAY
22
2027
Looped backyard ultra at Mantua Reservoir on May 22, 2027 featuring an exact 4.1 mile loop on flat, firm trails with springtime reservoir scenery.
Sat 22 May 2027
4.1 Mile Loop

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Backyard Ultra of Northern Utah

The Backyard Ultra of Northern Utah takes place on May 22, 2027 at Mantua Reservoir in Utah. The event uses the Backyard Ultra format, in which runners repeat a looped course and may continue for as long as they choose because there is no fixed total distance.

The Mantua Reservoir Trail is a loop of exactly 4.1 miles with no out and backs. The trail surface is generally flat and fast, composed of firm dirt with some gravel. Nighttime running often features headlamps around the lake.

The setting is the reservoir and surrounding landscape. In spring the area includes the Mantua Poppy Fields, green farmland, and mountain hillsides; wildlife may be present. Organizers note that temperatures in May should be favorable for running.

The format is suitable for participants new to ultramarathons who want to experience a looped race without a mandatory overall distance, and for experienced ultrarunners aiming to reach high cumulative mileages, including totals beyond 100 miles or into the 200+ mile range. Visit the organization's website for the most recent information.

Events nearby

A Halloween trail run on October 31, 2026 covering 10 km from North Ogden over the North Ogden Divide to Liberty with a costume contest and one aid station.
Family oriented 5K at Virgil Gibbons Heritage Park featuring optional HOPstacles, chip timing, finish line prizes, and special categories for costumes, pairs, strollers, and dogs.
Coldwater Traverse is a trail running event near Ogden, Utah offering 11 mile and 16 mile courses that run south along the Bonneville Shoreline Trail, with different starting locations in North Ogden and Pleasant View.
Last Person Standing race in North Ogden on a 7.7 mile loop with 1,200 ft of climb per lap and rolling elimination until one runner completes the final loop.
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