Riverbend Ultras 12 Hr/50k
Jupiter, United States • 12 Sep 2026
Riverbend Ultras 12 HR/50K
The event is based at the River Pavilion on Picnic Island in Riverbend Park, Jupiter, FL. Races follow a roughly 3.2 mile loop along the Loxahatchee River on gravel trails, including a section of the Lake to Ocean Trail, and pass through oaks and cabbage palms. Wildlife commonly seen includes deer, turkey, turtles, raccoons and many bird species.
Distances offered:
- 12-Hour
- 50K
- Fun Run (about 5k)
Race format and amenities are handled on loop laps. The 12 hour entry requires repeated Riverbend loops; later in the event runners move to the Picnic Island Loop. The 50K is described as two 0.85 mile Picnic Island loops plus nine 3.25 mile Riverbend loops for a total of 31.2 miles. The Fun Run uses the same 5k-ish loop, is not timed and does not qualify for awards; a shirt can be added for an extra fee and participants receive a medal.
Awards include trophies for first place male and female in each distance. All 50K and 12 hour participants receive shirts and medals. The event is run as a self-supported, community-oriented gathering with potluck snacks encouraged and space available for day setups. It operates as a non-profit effort; proceeds beyond overhead benefit the local Florida Trail Association chapter. No refunds are offered; registrations may be deferred to the following year or forfeited fees will be donated. Visit the organization's website for the most recent information.