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

Event Overview

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! 🥾:

Race Categories

• 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! 🏃:💨:

Finisher Rewards

• Finisher's Medal: Every pioneer who crosses the finish line earns a handsome Finisher's Medal and an OFFICIAL race shirt.
• Finisher BUCKLE: Survive the 100K Ultra, and you’ll be walking away with a mighty heavy Finisher BUCKLE to prove your fortitude.
• Refreshments: Plentiful provisions along the route to keep your canteens full and your wagon rolling.
• Post-Race Celebration: A post-race hootenanny complete with hearty grub, cold revitalizing tonics, and foot-stomping music!

Race Rules

• No Hounds: By official USATF decree, pets must remain at the homestead.
• Pack Your Own Canteen: 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.

Race Day Itinerary

• 06:00 AM: The gates open for Packet Pick-up
• 07:00 AM: 100K Stampede Begins
• 07:30 AM: 50K Start
• 11:00 AM: The Mighty Mammoth 1K Kids Race! 🦣:

Accommodations

🏕:️ 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. 🛏:️​

Refund and Transfer Policy

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

Course Maps

COURSE MAPS - Viewable HERE

Join the Adventure

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