Quicksilver 50 km Endurance Run

Race completed

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.

37.3394° N, 121.8950° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~131 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2026 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, May

Daytime high 21°C

Night low 8°C

Rainfall Dry — rain unlikely

Daylight 13 h 58 m of light

Regional 2001-2020 average for May — NASA POWER, grid elevation 233 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2026	50km	131	Patrick Rabuzzi · 04:07:38	Laila Reimanis · 05:03:07
2025	50km	130	Garrett Gardner · 04:01:26	Katherine Hoolihan · 04:39:12
2024	50km	147	Nickademus de la Rosa · 04:17:12	Teresita Gomez · 04:45:21
2023	50km	139	Gaspar Mora Porta · 04:31:16	Sachiko Iwasaki · 05:49:42
2022	50km	137	Chris Myers · 03:42:31	Emily Spognardi · 05:25:53
2021	50km	158	Brett Hall · 03:54:57	Courtney Smith · 04:28:47
2019	50km	110	Drew Holmen · 03:32:10	Sarah Burke · 04:48:28
2018	50km	179	Rob Krar · 04:01:48	Rhea Black · 05:03:55
2017	50km	147	Christopher Denucci · 04:02:15	Yiou Wang · 04:11:42
2016	50km	134	Christopher Denucci · 04:08:58	Yiou Wang · 04:16:08

The field has held steady: 130 in 2025, 131 in 2026. 36% of the 2026 field were women.

DUV results for the 2026 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.

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

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

Skratch Labs