Antelope Island 50k

Hooper, United States • 18 Oct 2025

The Antelope Island 50K is a challenging ultramarathon held at Antelope Island State Park Marina in Syracuse, Utah. The race features a single 50K loop starting and finishing at the marina, covering approximately 31.7 miles with 3,900 feet of elevation gain. Runners navigate diverse terrain including switchbacks, climbs, and scenic trails with aid stations spaced throughout the course, including a drop bag location.

A half marathon option is also available on the Mountain View Trail. Participants receive a tech shirt, access to the island, and can enjoy post-race buffalo chili. Finishers earn a unique coffee mug, and top runners receive trophies and prizes.

The event fosters a fun, supportive atmosphere with cornhole games at aid stations. Visit the organization's website for the most recent information.

Race information

50 km
1189 m+
50k
21 km
Half Marathon
Visit the organization's website for the most recent information.
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