Logo

Dunes 50K Ultra

Hobe Sound, United States • 25 Apr 2026

Event overview

The Dunes 50K Ultra & Heavy Half is scheduled for April 25, 2026 in Hobe Sound, FL at Jonathan Dickinson State Park. The event lists the following distances:

  • 50K
  • 13.1 (half distance)
  • Kids free fun run

The event location is given as 16450 S.E. Federal Highway. Registration is listed as closing on April 25, 2026. The organizer notes that spots for the 50K and Heavy Half are limited.

Course and rules

The courses run through Jonathan Dickinson State Park across more than 11,000 acres and 16 natural communities. The route includes prairie wetlands and large sugar sand dunes described as soft and rolling. The event notice states there are no refunds and no transfers; vouchers will be honored until March 27, 2025. Visit the organization's website for the most recent information.

United States Florida Hobe Sound

Race information

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

DTR 10 Mile Night Run

Hobe Sound

Run 10 miles under the stars in Jonathan Dickinson State Park on scenic trails with required headlamps. Come in costume for prizes, then celebrate with music, beer, a finisher medal and refreshments.

Treasure Coast Endurance Challenge

Jupiter Island - 3 mi from Hobe Sound

Explore trails, waterways and wetlands at Jonathan Dickinson State Park for the Treasure Coast Endurance Challenge on Nov 8, 2025. Pick a 5K, 25K, 50K or multi discipline adventure race with paddling, biking and navigation for solo or team.

Sari Trail Run/Walk

Jupiter - 9 mi from Hobe Sound

Join the Sari 5K Trail Run/Walk in Jupiter on November 15, 2025 for a scenic 5K at Riverbend Park with in person and virtual options. Proceeds benefit the Sari Center offering integrative therapies and support for people affected by cancer.

The Gardens Trailblazer 5k

Palm Beach Gardens - 15 mi from Hobe Sound

Bring the family to the Gardens Trailblazer 5K in Palm Beach Gardens for a chip timed 5K or a 2K fun run. Enjoy a performance shirt, finisher ornament and festive tree lighting with Santa.

Jupiter Ridge Sand Spur

Oceanside Terrace - 10 mi from Hobe Sound

Run ancient sand dunes at Jupiter Ridge Natural Area with options from a Lunacy 30k night run to 50k, 50 mile and half marathon distances. Limited to 80 runners, with pro chip timing, swag, finisher medals and unique hourglass awards.

Just Survive 125

Hobe Sound

Just Survive 125 is a rugged 200K out and back along Florida's Lake to Ocean trail, testing self sufficiency across diverse, remote ecosystems. Limited to 25 runners with a 48 hour cutoff, finishers earn a buckle and a tech long sleeve shir..