Jupiter, FL, United States · Saturday, December 26, 2026

Fixed Distance 50K

Jupiter Ridge Sand Spur 50k

86 days away

50 km Distance

not publishedn/a Climbing

2.5 est Grit · Entry level

Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.

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

What the course asks

Time limit 9 hours 10:48 min/km average. Generous. Walkable throughout for most of the field. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. Tighter than 71% of 50K races. Measured against 1034 races of the same distance. Cut-off calculator →

Field size ~15 Tiny. You will run alone for most of it.

DUV results for the 2025 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, December

Daytime high 24°C

Night low 20°C

Rainfall Mostly dry

Daylight 10 h 27 m of light

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

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	50km	15	Siyan Cao · 04:38:45	Amanda Gunter · 06:35:23
2024	50km	29	Alan Davidson · 04:40:49	Brenda Lips · 05:20:22
2023	50km	30	Alexander Gaber · 04:58:33	Brenda Lips · 04:49:50
2022	50km	20	Scott Hoover · 06:04:54	Allison Duarte · 05:25:52
2021	50km	17	Eric Kalina · 04:31:53	Mary Galbicka · 06:19:10
2020	50km	27	Patrick Gallagher · 04:27:12	Amy Colombo · 05:53:44
2019	50km	25	Cole Bataille · 04:26:02	Katie Dodge · 05:16:34
2018	50km	29	Cole Bataille · 04:42:38	Yajaira Pluess · 06:48:19
2017	50km	20	Robert Plante · 05:00:10	Lindsay Johnson · 05:26:59

The field shrank 48% between 2024 (29) and 2025 (15). 33% of the 2025 field were women.

DUV results for the 2025 edition (50km) — finishers 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 50 km of trail.

Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
Race Nutrition 50 km of self-supported fuelling between aid stations.
Hydration Vests Flask capacity for 50 km, without the bounce.
GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.

Salomon

Sense Ride 5

RunRepeat found the Salomon Sense Ride 5 to have immaculate lockdown and a smooth and stable ride, making it confident on moderate trails and steep downhills. I…

★★★★★ 4.5

Adidas

Terrex Speed Ultra

RunRepeat found the Adidas Terrex Speed Ultra to have a grippy outsole and great lockdown, while iRunFar noted that the shoe works on a variety of trail conditi…

★★★★★ 4.5

Spring Energy

Awesome Sauce

Real food gel with 180 calories. Rice-based with natural flavors.

$4 ★★★★★ 4.6

Salomon

ADV Skin 12

Industry-standard 12L race vest with front flask pockets and minimal bounce.

$180 ★★★★★ 4.8

Suunto

Vertical

Titanium GPS watch with solar charging, offline maps, and 140-hour GPS battery.

$630 ★★★★★ 4.5

All gear guides →

Overview

The Jupiter Ridge Sand Spur 50k, taking place in December 2026, is set entirely within the Jupiter Ridge Natural Area in Jupiter, FL. This 50-kilometer trail race has a time limit of 9 hours, translating to a cutoff pace of 10.8 minutes per kilometer.

This cutoff is tighter than 60% of 50k races, leaving less margin for error than most races of this distance. With 15 finishers in its 2025 edition, the race typically has a smaller field, bigger than only 24% of 50k races.

Similar races

Other 50K trail ultras, closest in distance first.