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 NO PLACE FINISHER AWARDS. BRAGGING RIGHTS ONLY PACKET PICK-UP RACE DAY on site PARKING Price INCLUDES Entrance and Parking OVERNIGHT CAMPING $10 per PERSON. NOT included in registration. Max 6 people per site. PAYABLE AT THE GATE REFUNDS/TRANSFERS Race Entry Fees are NON-REFUNDABLE, however TRANSFERS to another Person, Category or Mammoth Event are allowed. COURSE MAPS - Viewable HERE
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The Mammoth Trail Run 2026 – 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Fun Run 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 Fun Run 2026 — Glen Rose, TX?
The Mammoth Trail Run 2026 – 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Fun Run 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 Fun Run 2026 — Glen Rose, TX held?
The Mammoth Trail Run 2026 – 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Fun Run 2026 — Glen Rose, TX is held at High Hope Ranch and Retreat Center in Glen Rose, Texas.
Where can I find hotels near The Mammoth Trail Run 2026 – 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Fun Run 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.
