The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash
- Date Sat 10th October 2026 - Sun 11th October 2026
- Time 7:00AM CDT
- Location Glen Rose, Texas
- Price Free - $165.30
- Races 7 races
- Distances Ultra, 10km, 5km, 1km
Event summary
Get ready for an unforgettable adventure at The Mammoth Trail Run 2026, taking place from Saturday, October 10 to Sunday, October 11, 2026, at the stunning High Hope Ranch in Glen Rose, Texas! This exhilarating event invites trail enthusiasts of all levels to tackle a range of race distances, including the challenging 100K Ultra, 50K, 25K, 10K, and 5K, along with a fun-filled Mighty Mammoth 1K Kids Dash.
Experience the breathtaking beauty of Texas Hill Country as you navigate rugged paths and steep inclines that will truly test your endurance and grit. Each finisher will be rewarded with a unique medal and an official race shirt, while those who conquer the 100K Ultra will earn a coveted finisher buckle as a testament to their achievement. Join fellow adventurers for an exciting post-race celebration featuring delicious food, refreshing drinks, and lively music. Whether you're a seasoned trailblazer or a first-time participant, this event promises camaraderie, challenge, and a chance to create legendary memories. Don’t miss out—register today and become a part of this epic journey!
Experience the breathtaking beauty of Texas Hill Country as you navigate rugged paths and steep inclines that will truly test your endurance and grit. Each finisher will be rewarded with a unique medal and an official race shirt, while those who conquer the 100K Ultra will earn a coveted finisher buckle as a testament to their achievement. Join fellow adventurers for an exciting post-race celebration featuring delicious food, refreshing drinks, and lively music. Whether you're a seasoned trailblazer or a first-time participant, this event promises camaraderie, challenge, and a chance to create legendary memories. Don’t miss out—register today and become a part of this epic journey!
Organiser's Description
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. Weve 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 thatll 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. mountain
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 youll be walking away with a mighty heavy Finisher BUCKLE to prove your fortitude.
tent 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.
recycling symbol 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!
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. Weve 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 thatll 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. mountain
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 youll be walking away with a mighty heavy Finisher BUCKLE to prove your fortitude.
tent 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.
recycling symbol 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!
Races
-
100K Ultra Trail Run
Incl. $10.30 Fee & T-Shirt
Sat 10th October 2026 (7:00AM CDT)
$165.30
-
50K Trail Tun
Incl. $7.90 Fee & T-Shirt
Sat 10th October 2026 (7:15AM CDT)
$122.90
-
25K Trail Run
Incl. $6.10 Fee & T-Shirt
Sat 10th October 2026 (7:30AM CDT)
$91.10
-
10K Trail Run
Incl. $4.90 Fee & T-Shirt
Sat 10th October 2026 (8:30AM CDT)
$69.90
-
5K Trail Run
Incl. $4.30 Fee & T-Shirt
Sat 10th October 2026 (9:00AM CDT)
$59.30
-
The Mighty Mammoth 1K Fun Run
Incl. $2.80 Fee & T-Shirt
Sat 10th October 2026 (11:00AM CDT)
$32.80
$25.00 REGISTRATION - YOUTH SHIRT SIZES ARE SOLD OUT. WE CANNOT GUARANTEE A SHIRT. -
PACER - 100K Ultra Trail Run
Sat 10th October 2026 (7:00AM CDT)
Free
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High Hope Ranch, Glen Rose, 76043, TX, United States
The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash
