Friant, CA, United States · Saturday, December 5, 2026

Fixed Distance 50K

San Joaquin River Trail 50K Run

66 days away

50 km Distance

1,600 m Climbing

4.9 Grit · Challenging

36.9839° N, 119.7135° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 32 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Field size ~68 Mid-sized. Company early, well spread out by halfway.

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 14°C

Night low 5°C

Rainfall Mostly dry

Daylight 9 h 46 m of light

Regional 2001-2020 average for December — NASA POWER, grid elevation 195 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	50km	68	Chris Martinez · 05:04:08	Kristen Holman · 05:05:01
2024	50km	49	Oscar Perez · 04:37:04	Kate Olson · 05:30:48
2023	50km	86	Menso de Jong · 04:31:22	Erin Spencer · 05:55:29
2022	50km	44	Matthew Morrison · 05:35:37	Anne Braggins · 07:46:24
2021	50km	62	Chris Martinez · 04:52:18	Karen Horvath · 05:27:18
2019	50km	57	Jason Wara · 05:02:52	Elia Figueroa · 05:57:18
2018	50km	68	Cameron Zimmermann · 04:45:09	Nicole McManus · 05:32:18
2017	50km	56	Matthew Morales · 04:33:59	Nicole McManus · 05:42:48
2016	50km	72	Matthew Morales · 04:32:12	Paige Wooden · 05:56:32
2015	50km	60	Morgan Holland · 04:38:42	Suzanne Witmer · 05:39:47

The field grew 39% between 2024 (49) and 2025 (68). 32% 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

⛰️ terrain

This is a rolling course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert

👟 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 with 1,600 m of ascent.

Trail Running Shoes 32 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 50 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 1,600 m of ascent to walk up.
GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.

La Sportiva

Prodigio Pro

RunRepeat found the La Sportiva Prodigio Pro to have a secure, locked-in fit due to its premium upper, and also praised the shoe's energetic ride, particularly…

$225 ★★★★★ 4.6

Adidas

Terrex Agravic Speed Ultra

RunRepeat found the Adidas Terrex Agravic Speed Ultra to be perfect for midfoot and forefoot strikers, while iRunFar noted that the shoe feels incredibly effici…

★★★★★ 4.5

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