Riverbend Ultras 12 Hr/50k

SEP
12
2026
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.
Sat 12 Sep 2026
Fun Run 50k 12-Hour

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Riverbend Ultras 12 HR/50K

Riverbend Ultras takes place at the River Pavilion on Picnic Island in Riverbend Park, Jupiter, FL. The course uses gravel trails along the Loxahatchee River, including a section of the Lake to Ocean Trail, and passes through oaks and cabbage palms. Wildlife commonly seen includes deer, turkey, turtles, raccoons, and many birds.

Distances and formats:

  • 12-Hour: as many 3.25 mile Riverbend loops as a participant can complete
  • 50K: 2 0.85-mile Picnic Island loops plus 9 3.25-mile loops (31.2 miles)
  • Fun Run: roughly 3.2 mile loop, untimed, medal available, optional shirt

Trophies are awarded to 1st Place Male and Female in each distance. All 50K and 12-Hour participants receive shirts and medals. Fun Run entrants do not have their time tracked and are not eligible for awards; they pay a nominal fee that may include a medal and optional shirt.

The event follows a self-supported format, with encouragement for participants to share snacks and potluck items; there is ample space for day setups. It is organized as a non-profit endeavor; proceeds beyond basic overhead benefit the local Florida Trail Association chapter. No refunds are offered; registrations may be deferred to the following year or forfeited fees donated to the Florida Trail Association. Visit the organization's website for the most recent information.

50 km
50k
3 mi
Fun Run
12-Hour
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