Outlands Endurance Races
Apr 17, 2027Pilot Hill, CA50 mi, 50K +1
Also 25K, 139 mi from Mammoth Trailfest
26KCompleted
Mammoth Trailfest
Mammoth Lakes, California
- Entry from
- $10
- Aid stations
- 2
At a glance
- Last held
- Sep 27, 2026
- Next edition
- 2027 date not announced. Usually held in September.
- Location
- Mammoth Lakes, California
- Distances
- 26K
- Elevation gain
- 7,000 ft
- Aid stations
- 2
- Prize money
- $24,000 purse in 2026
- Prize payout
- The Mammoth 50K advertises a $9,000 purse. The Mammoth 26K advertises a $15,000 purse, including $6,200 allocated to para athletes.
- Prize source
- mammothtrailfest.comVerified Sep 24, 2026
- Official site
- mammothtrailfest.com
- Listed from
- UltraSignup
- Last checked
- Sep 27, 2026
Plan this race for free
2 aid stations are already loaded. Add cutoffs, pacing and the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my planAbout this race
Multi-day trail running festival in California's Eastern Sierra featuring world-class races, community events, live entertainment, storytelling, and local food, designed to increase access to trail running through opportunity, education, and trail stewardship.
Key dates
Registration closes
Sep 23, 2026
Race day
Sep 27, 2026
Pricing
Mammoth Triple
after 2/28
$440
50k
after 2/28
$215
26k
after 2/28
$165
Dragon Ascent
after 5/31
$105
tenkay
after 6/30
$100
Kids Run
after 7/31
$15
All distances
Kids Run
$10
Email me updates about Mammoth Trailfest
Registration openings and major changes, like a new date or a cancellation.
Aid stations
2| Station | Distance | Crew | Drop bags | Cutoff | Supplies |
|---|---|---|---|---|---|
Summit Aid Named as an aid station; bathrooms are available there. Access is possible by gondola ticket or hiking designated trails. | -- | -- | -- | ||
McCoy Named as an aid station; bathrooms are available there. Access is possible by gondola ticket or hiking designated trails. | -- | -- | -- |
Entry transfers
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
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Race planning
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