Dunes 50K Ultra

Hobe Sound, United States • 24 Apr 2027

Dunes 50K Ultra & Heavy Half : April 24, 2027

The event takes place in Hobe Sound, FL at Jonathan Dickinson State Park. It features trail races across more than 11,000 acres of parkland and multiple natural habitats.

Distances offered:

  • 50K
  • Heavy Half (a designated half-distance event)
  • Kids FREE Fun Run

The courses run through 16 distinct natural communities, including prairie wetlands and sections described as soft, rolling sugar sand dunes and areas called the Dunes of Heaven and Hell. Terrain varies and includes sandy stretches that affect footing and effort.

Spaces for the 50K and the Heavy Half are limited. Registration opens on August 2, 2026 at 12:00 AM ET. The event policy states no refunds and no transfers; vouchers will be honored until 3/27/25.

Location details list 16450 S.E. Federal Highway, Hobe Sound, FL. The event is organized as an outdoor, in-person trail race within the state park. Visit the organization's website for the most recent information.

Race information

50 km
50k
14 mi
Heavy Half
13 mi
13.1
Kids Free Fun Run
Visit the organization's website for the most recent information.
Trail runs nearby

A multi-race trail event at Jupiter Ridge Natural Area featuring sand dune terrain and options from a 5k loop to a 102 mile ultramarathon. Several formats include looped elimination, fixed time limits, and qualifying requirements for longer..

Trail event at Riverbend Park in Jupiter, FL offering 50K, 12 hour self supported laps and a roughly 5k fun run. Proceeds benefit the Florida Trail Association and awards, shirts, and medals are provided for the main distances.

The Osprey Trail Run at Oxbow Eco Center in Port St Lucie on September 19, 2026 offers two looped, timed distances with aid stations and proceeds that 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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