Crewable
RacesNear meVolunteerAthletesPricingSign inGet started
Mount Disappointment Mountain Race, photo 1 of 8
Mount Disappointment Mountain Race, photo 2 of 8
Mount Disappointment Mountain Race, photo 3 of 8
Mount Disappointment Mountain Race, photo 4 of 8
Mount Disappointment Mountain Race, photo 5 of 8
Mount Disappointment Mountain Race, photo 6 of 8
Mount Disappointment Mountain Race, photo 7 of 8
Mount Disappointment Mountain Race, photo 8 of 8
Build race plan

Mount Disappointment Mountain Race

Mt. Wilson, CaliforniaWebsite7,000 ft gain
In 321 days
50K$16525K$140
Registration open

About this race

A classic Southern California trail challenge set in the heart of the Angeles National Forest, beginning near the historic Mt. Wilson Observatory and winding through some of the San Gabriel Mountains' most spectacular terrain.

Key dates

Regular ends

Mar 30, 2027

149d

Registration closes

Sep 10, 2027

313d

Race day

Sep 18, 2027

321d

Email me updates about Mount Disappointment Mountain Race

Registration openings and major changes, like a new date or a cancellation.

Entry transfers

I have an entryI need an entry

Tune-up races

Similar races

More 50K Races in California

All 50K Races in California

Races Near Los Angeles

All races near Los Angeles

Plan Mount Disappointment Mountain Race with Crewable

Your aid stations, pacing, nutrition, and crew in one plan.

Build my plan

Are you the race director for Mount Disappointment Mountain Race?

Claim this race to manage registration, volunteers, and race day.

Claim this race

Listed from UltraSignup. Checked Nov 1, 2026.