Mount Disappointment Mountain Race

Race completed

50 km Distance

1,740 m Climbing

5.1 Grit · Challenging

34.2239° N, 118.0612° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 35 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Time limit 10 hours 12:00 min/km average. Generous. Walkable throughout for most of the field. About average for a 50K. Measured against 1034 races of the same distance. Cut-off calculator →

Field size ~39 Small. Long stretches with nobody in sight.

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, September

Daytime high 29°C

Night low 17°C

Rainfall Dry — rain unlikely

Daylight 12 h 03 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 395 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	50km	39	Joel Frost-Tift · 05:06:18	Annette Ramirez · 06:46:39
2019	50km	95	Michael Eastburn · 04:23:24	Paige Clarke · 05:44:43
2018	50km	94	Chase Coffey · 04:25:26	Ana-Carolina Suchey · 06:04:30
2017	50km	110	Ruperto Romero · 04:38:44	Elizabeth Ochoa · 06:19:45
2016	50km	95	Jorge Pacheco · 04:34:36	Tara Miranda · 06:13:32
2015	50km	88	Ruperto Romero · 04:36:13	Ana Guijarro · 05:44:01
2012	50km	101	Jorge Pacheco · 05:00:41	Ana Guijarro · 05:28:22
2011	50km	123	Jorge Pacheco · 04:46:29	Heather Fuhr · 05:07:11
2010	50km	93	Patrick Sweeney · 04:40:46	Sada Crawford · 05:28:17
2009	50km	161	Thomas Crawford · 04:09:54	Michelle Barton · 04:53:30

The field shrank 59% between 2019 (95) and 2025 (39). 31% 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 1,740 m of ascent.

Trail Running Shoes 35 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 1,740 m of ascent to walk up.
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

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

Skratch Labs