The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash

THE MAMMOTH TRAIL RUN ️ A Chronicle of Grit and Wonder!

​October 10, 2026 | High Hope Ranch | 3353 County Road 2009 I Glen Rose, Texas

Attention all trailblazers, pioneers, and audacious gentlefolk! The Mammoth Trail Run is calling you out to the untamed expanse of High Hope Ranch. We’ve carved out a thousand acres of rugged Texas Hill Country for a true test of your mettle. Gather the herd and prepare for an expedition that’ll leave you with legendary tales to tell.

A word to the wise: Some areas of the course feature downright STEEP inclines and declines. Trail shoes with heavy traction are highly advised to keep your boots firmly on the trail!

​OFFICIAL UNDERTAKINGS: Whether you're looking for a brisk morning jaunt or a sun-up to sun-down reckoning, choose your challenge:

100K Ultra: For the absolute boldest of the bunch! (26-hour cutoff) ️

50K | 25K | 10K | 5K: Rugged paths for every level of grit. ⛰️

The Mighty Mammoth 1K: A spirited, non-timed dash for the young 'uns!

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THE BOUNTY:

Every pioneer who crosses the finish line earns a handsome Finisher's Medal and an OFFICIAL race shirt. 

️ Survive the 100K Ultra, and you’ll be walking away with a mighty heavy Finisher BUCKLE to prove your fortitude. 

⛺ Plentiful provisions along the route to keep your canteens full and your wagon rolling. 

A post-race hootenanny complete with hearty grub, cold revitalizing tonics, and foot-stomping music! 

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RULES OF THE TRAIL:

No Hounds: By official USATF decree, pets must remain at the homestead.

Pack Your Own Canteen (B.Y.O.B.): This is a cupless expedition! Bring your own hydration vessels to keep the frontier pristine.

️ Come Hell or High Water: We run rain or shine. The frontier waits for no one!

Glory is the Prize: No age-group awards here. Your reward is the pure, unadulterated triumph of conquering the elements.

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TRAIL BOSS ITINERARY (Race Day):

06:00 AM: The gates open for Packet Pick-up

07:00 AM: 100K Stampede Begins

07:30 AM: 50K Start

08:30 AM: 25K Start

09:30 AM: 10K Start

10:00 AM: 5K Start

11:00 AM: The Mighty Mammoth 1K Kids Race! ​

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️ CAMP & QUARTERS: Stake your claim under the wide-open Texas sky! Primitive camping and Boondocking sites (no hook-ups) are available right on the land for $10 a head (max 6 per site). Prefer a solid roof over your head? The local guest houses and the Baymont Inn & Suites in town will treat you right. ️​

♻️ REFUNDS/TRANSFERS  Race Entry Fees are NON-REFUNDABLE, however TRANSFERS to another Person, Category or Mammoth Event are allowed.

COURSE MAPS - Viewable HERE

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       Dust off your gear and JOIN THE HERD.  Register today to secure your place in the chronicle!