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THE MAMMOTH

October 10, 2026

Glen Rose, TX

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100K /50K/25K/10K/5K  

MIGHTY MAMMOTH 1K

Get ready for The Mammoth Race inaugural Fall Classic at High Hope Ranch! This multi-distance trail run welcomes families and runners of all skill levels. Enjoy the pristine Hill Country that surrounds this stunning ONE THOUSAND acre Eco-Retreat. The ranch is dedicated to wildlife habitat protection, biodynamic agriculture and neighbors Fossil Rim Wildlife Center. This a fantastic way to celebrate the Fall Harvest Season and create some lasting memories! We can't wait to see you out there! 

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RACE CATEGORIES:

RACE HIGHLIGHTS:                                                                                                                                                 

  • Finisher Shirts and Medals for all Participants

  • Generous Cut Off times - Cut off time for 100K only!

  • Finisher BUCKLES for 100K Ultra

  • Scenic routes through pristine natural landscapes

  • Well-marked trails and 'round the clock aid stations

  • Exclusive sites for tent camping and boondocking (no hook-ups)

  • Post-race celebration. Music, food and refreshments!​​​

ADDITIONAL INFO:

  • PETS ARE NOT ALLOWED. USATF sanctioned event policy does not allow for animals to participate in competitions.

  • ​The Mammoth is an Enviro-Friendly Event - B.Y.O.B (Bring Your Own Bottle) 

  • ​RAIN or SHINE. In the event of inclement weather that would threaten the safety of the racers, the event or courses may be altered or the event may be delayed or canceled. 

 

LOCATION

High Hope Ranch

3353 County Road 2009

Glen Rose, TX 76043

TERRAIN

Classic Hill Country Texas Trail

RACE DAY SCHEDULE

  • 100K  -  07:00am

  •   50K  -  07:15am

  •   25K  -  07:30am

  •   10K  -  07:45am

  •    5K   -  08:00am

  •    1K   -  10:00am

CLASSIC SWAG

  • All participants will receive a Mammoth Race OFFICIAL Race shirt and a Finisher's Medal. 

  • Finisher BUCKLES for 100K ULTRAS

 

AWARDS

  • NO PLACE FINISHER AWARDS. BRAGGING RIGHTS ONLY

PACKET PICK-UP

  • On-site. Race Day only starting at 0600am 

PARKING

  • Price INCLUDES Entrance and Parking

OVERNIGHT CAMPING

  • $10 per PERSON.  Max 6 people per site. PAYABLE AT THE GATE

 

STAY IN GLEN ROSE, TX 

BOOK YOUR STAY at High Hope Ranch - Guest Houses 

Limited availability. Reserve NOW!

Baymont Inn & Suites by Wyndham Glen Rose -DISCOUNTED RATES. INCLUDES BREAKFAST

1615 NE Big Bend Trail, Glen Rose, Texas 

REFUNDS/TRANSFERS

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

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Volunteer for The Mammoth Learn more HERE.

MAMMOTH SIZE THANKS to OUR GENEROUS PARTNERS!
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