Dunes 50K Ultra

Hobe Sound, United States • 24 Apr 2027

Dunes 50K Ultra & Heavy Half : Hobe Sound, FL

The event is a set of trail races held at Jonathan Dickinson State Park in Hobe Sound, Florida. Courses run across more than 11,000 acres and pass through 16 distinct natural communities, including prairie wetlands and named dune areas called Dunes of Heaven and Dunes of Hell.

The terrain includes soft, rolling sugar sand dunes and a variety of off-road surfaces typical of a state park trail system. The listing indicates limited entry for the longer distances and a stated policy of no refunds and no transfers; vouchers are noted as honored until 3/27/25.

Race distances and options:

  • 50K
  • Heavy Half (14.4 miles)
  • Kids Free Fun Run

The event page lists the race location as 16450 S.E. Federal Highway, Hobe Sound, FL. Registration is shown to open on Sun. Aug 2, 2026 at 12:00 AM ET. Additional event details such as course maps, aid station locations, and exact start procedures are provided by the organizer through the event materials. Visit the organization's website for the most recent information.

Race information

50 km
50k
14 mi
Heavy Half
Kids Free Fun Run
Visit the organization's website for the most recent information.
Trail runs nearby

Multiple loop based races on ancient coastal sand dunes in Jupiter, Florida, from a 13.2 mile half to a 102 mile ultramarathon, with heat and sand making each distance a demanding endurance test.

Looped gravel trail event at Riverbend Park in Jupiter FL, offering 12-hour, 50K, and a fun 3.2-mile run along the Loxahatchee River. The event is self-supported and benefits the local Florida Trail Association chapter.

A looped trail race at Oxbow Eco-Center in Port St. Lucie offering 8k and 25k options on a marked, timed course with aid stations; net proceeds support St. Lucie County environmental education.

Experience an adventure race or trail run through the scenic landscapes of Jonathan Dickinson State Park. Choose from multiple distances and disciplines including trekking, mountain biking, and paddling in this multi sport challenge.

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