The Mammoth Trail Run 2026 takes place at High Hope Ranch in Glen Rose, Texas on October 10th, starting at 7:00 AM. The event offers multiple distances to suit different abilities: a 100K ultra, 50K ultra, 10K, 5K, and a 1K kids dash. Entry fees range from free to $185.00 depending on the distance selected. Trail runners can choose their challenge level, from the short kids' option to the demanding hundred-kilometer ultramarathon. Glen Rose provides a Texas Hill Country location for endurance athletes seeking longer efforts or those bringing family members to participate in shorter distances.
From the Race Organizer
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! 🏃💨 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! 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. 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! 🦣 🏕️ 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 Dust off your gear and JOIN THE HERD. Register today to secure your place in the chronicle!
Hotels Near This Race
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The Mammoth Trail Run 2026 – 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash 2026 — Glen Rose, TX
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Race Travel Insurance
Don't forget travel insurance for October 10.
You've trained for months and booked a trip to Glen Rose, TX.
A pre-race injury, a delayed flight, or a family emergency can derail the whole thing.
Travel insurance can help cover your race entry fee, hotel, and flights if you can't make it,
and may cover medical costs if something goes wrong on the course. Plans typically only run
5-7% of your total trip cost — and running events are covered under standard plans with no
additional coverage needed.
Trip cancellation up to 100% of prepaid costs
Running events covered under standard plans — no add-ons needed
Trip interruption up to 150% of non-refundable costs
When is The Mammoth Trail Run 2026 – 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash 2026 — Glen Rose, TX?
The Mammoth Trail Run 2026 – 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash 2026 — Glen Rose, TX takes place on October 10, 2026. The race is held in Glen Rose, Texas.
Where is The Mammoth Trail Run 2026 – 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash 2026 — Glen Rose, TX held?
The Mammoth Trail Run 2026 – 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash 2026 — Glen Rose, TX is held at High Hope Ranch in Glen Rose, Texas.
Where can I find hotels near The Mammoth Trail Run 2026 – 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash 2026 — Glen Rose, TX?
RaceHotelFinder shows hotels sorted by distance from the race venue in Glen Rose. Use the map or list view on this page to compare options and book race weekend accommodation.
