From big races to Saturday morning group runs—find 10k events and connect with the local endurance sports community.
Listen up, Trail Seekers.
Forget the clock. Forget the noise. There is a different kind of time kept out in the limestone breaks of Glen Rose, and it’s calling you back to the dirt.
Welcome to the High Hope Endurance Run—the beating heart and soul of The Mammoth Race movement.
This Memorial Day weekend, we’re gathering at High Hope Ranch for a festival of dust, grit and glory. This isn’t a "race" in the way the city understands it. This is a 1,000-acre cosmic playground of biodynamic soil, cedar-scented air, and the raw, unpolished beauty of the Texas Hill Country.
🏜️ THE JOURNEY
One ranch. Two days of dirt. No ego, just energy. The ranch meets you exactly where you are.
200K & 100K: For those looking to lose themselves and find something better.
50K & 25K: The rhythm of the ridge. Pure, sustained groove.
10K & 5K: A fast, dirty dance with the trails.
🌀 THE EXPERIENCE
The Land: You’re running through a sanctuary. Respect the land, feel the vibration of the wildlife next door at Fossil Rim, and leave the world behind.
The Fuel: We don’t just have volunteers; we have a "Mighty Herd." Our aid stations are an oasis of high-fives, real food, and soulful encouragement.
The Camp: Pitch a tent, kill your phone, and reconnect. The magic happens between the finish line and the stars. Camping is FREE.
The Flow: We’re cupless and conscious. We leave only footprints; we take only memories and maybe a little bit of ranch dust in our lungs.
🚀 THE COUNTDOWN
200K: Open start midnight to 7AM. Saturday ONLY.
100K: 7:00AM
50K: 7:30AM
25K: 8:30AM
10K: 9:30AM
5K: 10:15AM
What Your Journey Includes:
Official High Hope Endurance Run T-shirt
A Super Groovy Finisher Medal
Ultra Buckles for 100K and 200K Finishers
Bragging Rights
FREE Camping and Boondocking (no-hook ups)
FREE Entrance and Parking
"The trail doesn't ask who you are; it shows you." — The Herd
Stop counting the days and start making the miles count. The dust is waiting to settle on your shoes.
✌🏼Peace, Love and Dirt
Get ready for The Mammoth Race Glen Rose FALL migration. This multi-distance trail run welcomes families and runners of all skill levels. Enjoy the Hill Country that surrounds this stunning ONE THOUSAND acre ranch. We can't wait to see you out there!
The Mammoth - Glen Rose, TX is a multi-distance trail running event located on the trails High Hope Ranch and Eco-Retreat. Distances offered are 100K, 50K, 25K, 10K, 5K and The Mighty Mammoth 1K FUN RUN. There will be two sections of the course: a 3.5-mile loop and a 7-mile loop. Both loops combined equal a 10.5 mile lap. The event will run from 7 am on Saturday morning until 9 am on Sunday morning. The starting line and Main Race Hub will be the main lodge on the Ranch. There are two aid stations on course: the main lodge at the starting line, and Matazamo ranch house. Aid stations are approximately 3.5 miles apart.
RACE CATEGORIES:
100K - 26hr Cut-off time
50K
25K
10K
5K
Mighty Mammoth 1K Fun Run - NON-CHIP TIMED EVENT.
RACE HIGHLIGHTS:
Finisher Shirts and Medals
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.
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
PACKET PICK-UP
PARKING
OVERNIGHT CAMPING
REFUNDS/TRANSFERS
COURSE MAPS - Viewable HERE