Berkeley, CA, United States · Saturday, May 8, 2027

Fixed Distance 50K

Grizzly Peak 50k

220 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.

37.8716° N, 122.2728° 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 Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it.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 ~18 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, May

Daytime high 19°C

Night low 9°C

Rainfall Dry — rain unlikely

Daylight 13 h 58 m of light

Regional 2001-2020 average for May — NASA POWER, grid elevation 87 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	50km	18	Chris Deming · 05:19:37	Rebecca Metrick · 07:35:30
2024	50km	22	Chris Portella · 05:52:14	Rebecca Metrick · 07:32:33
2023	50km	13	Patrick Yalon · 06:32:28	Kirsten Kanarr · 06:47:17
2022	50km	16	Petr Martynov · 05:33:53	Julia Hall · 06:57:03
2019	50km	39	Chris Deming · 04:48:49	Hailey Hollenhorst · 06:16:51
2018	50km	25	Max Feinstein · 05:18:25	Jennifer Schaffhouser · 05:31:01
2017	50km	21	Samuel Clinton · 05:26:58	Rose Kennedy · 05:58:08
2016	50km	30	Kevin Moore · 05:02:42	Karrie Hutchins · 06:46:38
2015	50km	22	Evan Namkung · 04:50:05	Penelope MacPhail · 05:31:32
2014	50km	28	Ian Sharman · 04:47:10	Kristine Clevenger · 06:14:29

The field shrank 18% between 2024 (22) and 2025 (18). 44% 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.

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

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

Tailwind