Jupiter, FL, United States · Saturday, September 11, 2027

Timed 12 hours

Riverbend Park 12 Hour Ultra

346 days away

not publishedn/a Distance

not publishedn/a Climbing

not publishedn/a Grit

We hold no course length for this race — a timed or backyard event is measured by the clock, not the kilometre — so there is no Grit score to give you.

26.9342° N, 80.0942° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~34 Small. Long stretches with nobody in sight.

DUV results for the 2025 edition (12h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, September

Daytime high 29°C

Night low 26°C

Rainfall Wet — expect rain

Daylight 12 h 27 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 4 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	12h	34	Conner Levin · 94.148 km	Caryn Lubetsky · 107.021 km
2024	12h	36	Brian Schuyler · 84.973 km	Caryn Lubetsky · 106.216 km
2021	12h	9	John Becker · 86.389 km	Ariel Bernstein · 95.498 km
2019	12h	18	Eduardo Souza · 112.734 km	Lisa Devona · 94.227 km
2018	12h	26	Michael Peragine · 84.490 km	Caryn Lubetsky · 98.009 km
2017	12h	14	James English · 102.193 km	Meredith Taylor · 85.295 km
2016	12h	7	Rick Welch · 80.467 km	Jennifer Carvallo · 77.248 km
2015	12h	18	James English · 87.709 km	Malika Zhang · 86.099 km
2014	12h	16	Christopher Knight · 82.720 km	Jodi Samuels · 89.479 km

The field shrank 6% between 2024 (36) and 2025 (34). 44% of the 2025 field were women.

DUV results for the 2025 edition (12h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.

The Aid Station

Course-specific beta from the community

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for this trail race.

Trail Running Shoes Cushioning on trail that is still there in the last quarter.
Race Nutrition Self-supported fuelling between aid stations.
Hydration Vests Flask capacity without the bounce.
Headlamps A 12 h limit puts you out there after dark.
GPS Watches Battery life first — an ultra outlasts most full-GPS modes.