RunRace USA › Texas › The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash
The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash
Glen Rose, Texas · Saturday, October 10, 2026 · 100K, 50K, 25K, 10K, 5K, 1K
Official race page & registration ↗The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash takes place on Saturday, October 10, 2026 in Glen Rose, Texas. The race offers 6 distances: 100K, 50K, 25K, 10K, 5K, 1K. It is run on trail. For anyone travelling in, Cleburne is about 23 miles away and Fort Worth is about 43 miles away.
It is one of 388 races on the Texas calendar that October. At $30, entry is about typical for a Texas ultra, where the median is $30.
- Date
- Saturday, October 10, 2026
- Location
- Glen Rose, Texas
- Distances
- 100K, 50K, 25K, 10K, 5K, 1K
- Surface
- Trail
- Entry fee
- from $30
Listing from the 2026 race calendar, refreshed nightly. Details can change: confirm date and entry on the official race page before travelling. Spot an error? Tell us here.
Making a race weekend of it?
Stay near the start line in Glen Rose: check in Oct 9, out Oct 11.
Common questions
When is The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash?
The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash is scheduled for Saturday, October 10, 2026.
Where is The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash held?
The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash is held in Glen Rose, Texas. It is about 23 miles from Cleburne and 43 miles from Fort Worth.
What distances does The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash offer?
The listed distances are 100K, 50K, 25K, 10K, 5K, 1K.
How much does The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash cost?
Entry is listed from $30. Check the official race page for the current price, which usually rises closer to race day.
How do I register for The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash?
Registration is handled on the official race page, linked at the top of this listing. Entry can close early if the race sells out.
More races nearby
- Oct 10Crazy Water 5KMineral Wells, TX
- Oct 10Day of the Dead Half Marathon - DallasDallas, TX
- Oct 10Day of the Dead Half Marathon - GalvestonGalveston, TX
- Oct 10Dino Days Jamboree 5KWalnut & Vernon, TX
- Oct 10Double Trouble - 5K & 10KGrapevine, TX
See every race on the Texas calendar, Texas 5Ks, Texas 10Ks, or use the Race Finder for maps and filters.