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Dunes 50K Ultra

Hobe Sound, United States • 25 Apr 2026

Dunes 50K Ultra & Heavy Half : Jonathan Dickinson State Park

This event stages trail races at Jonathan Dickinson State Park in Hobe Sound, FL, near 16450 S.E. Federal Highway. The program lists a full ultra at 50K, a Heavy Half distance, and a Kids FREE Fun Run.

The courses cross over 11,000 acres and travel through 16 distinct natural communities. Terrain types named for sections of the course include prairie wetlands and dune areas referred to as the Dunes of Heaven and Hell. Large stretches of soft, rolling sugar sand dunes are noted as a prominent surface on the route.

The organizer states that entry is limited for the 50K and Heavy Half races. Registration closes on Sat, Apr 25 at 11:59 PM ET. The event policy specifies no refunds and no transfers; vouchers will be honored until 3/27/25.

Available resources referenced for participants include a website and directions to the park. A separate kids fun run is listed as free. The description emphasizes that the course covers varied natural environments within the state park and that space for the longer races is restricted. Visit the organization's website for the most recent information.

United States Florida Hobe Sound

Race information

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