Mount Disappointment Mountain Race

United States flag Mt. Wilson, California, United States

319 days left

Mount Disappointment Mountain Race ultrasignup.com
Date 18 Sep, 2027
Races 2 distances
Entry fee $130.00 – $155.00
Runner rating Be the first to rate
Mount Disappointment Mountain Race

About the event

The Mt. Disappointment Mountain Race offers an exhilarating trail challenge deep within the Angeles National Forest, starting near the historic Mt. Wilson Observatory. Runners can opt for either the 25K course with its steep climbs and scenic ridge lines, or push their limits on the 50K ultra, which features rugged singletrack trails and breathtaking views from high saddles like Markum.
The shorter 25K route begins with a formidable climb that rewards runners with sweeping vistas as they ascend toward Mt. Disappointment before looping through diverse forest paths. The longer 50K course extends further into the wilderness, taking competitors on historic trails such as Gabrielino and Colby Canyon, culminating in an unforgettable ascent up the Kenyon Devore Trail to reach the iconic Mt. Wilson Observatory.
Both courses are marked by relentless climbs and technical descents that test both physical strength and mountain navigation skills. Aid stations along the way ensure runners stay fueled for this demanding adventure amidst towering peaks and shaded canyons, making it a favorite among seasoned trail enthusiasts in Southern California.

Races offered

18Sep

25KM

Running

Distance
25K
Start time
07:00
Entry fee
$130.00
18Sep

50KM

Running

Distance
50K
Start time
07:00
Entry fee
$155.00

Weather history

3-year monthly averages for September in Mt. Wilson.

Temperature11.0° / 21.2°
Feels like8.8° / 18.3°
Sunshine hours11h 31m
Rainfall1.0 mm
Snowfall—
Wind5.5 km/h (Light breeze)
Humidity52.5%
Max UV indexModerate (5.0)
Sweat lossModerate
Course conditionsFirm and slightly soft
Sunrise06:35
Sunset18:56

Hotels & places to stay

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Race results

All-time top performances and historical records for Mount Disappointment Mountain Race.

Place Name Gender Age Year City Time
🥇 Thomas Crawford M 29 '09 — 4:09:54
🥈 Jorge Pacheco M 41 '09 — 4:22:52
🥉 Jorge Pacheco M 38 '06 — 4:27:01
4 Jorge Pacheco M 48 '16 — 4:34:36
5 Jonathan Mitchell M 36 '09 — 4:35:11

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