Mustang Marathon (Hill Country Trivium) Road Race
About this race
Sunday, November 8th, 2026.
Are you ready for one of the most challenging & amazing road races in all of Texas? The Mustang Marathon (formerly known as The Hill Country Trivium) is a set of 50k, full marathon, half marathon (a.k.a. "Thirteener"), 10k & 5k races held in the beautiful Hill Country town of Marble Falls. Each race takes place on a paved surface involving a true "Out & Back" course on country roads with rolling hills, formidable climbs & gorgeous views. All races begin & end at the Marble Falls High School’s Mustang Stadium. In addition to various race perks, all finishers will receive pie from the legendary Bluebonnet Cafe upon crossing the finish line!
While every racer will get some cool swag, October 16th is the deadline to get a shirt.
Pick your distance
Trail running
Mustang Marathon 50k
Mustang Marathon 26.2mi
Mustang Marathon 13.1mi
Mustang Marathon 10k
Mustang Marathon 5k
Mustang Marathon Youth 1-Mile Run (12 & Under)
Come join us for the Hill Country Trivium Youth 1-Mile Race. The Youth Run is for Kids 12 & under and will be sure to please our youngest runners quest for adventure! The distance is approximately 1 mile and parents may run with their kids at no cost. Each young runner gets a finisher's medal! **T-shirts are not included but are available for purchase for $15 during registration.
Typical race-day weather
Based on 7 years of Open-Meteo archive data for this event's race dates in Marble Falls, plus the 3 days either side.
The sun rises at 6:53 AM and sets at 5:40 PM local time (CST) in Marble Falls on November 8, 2026 — 10h 46m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
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Other races near Marble Falls
Different organizers, within 40 miles, in the next three months
Fields of Gold 50K • Marathon • Half Marathon • 12 Hour • 1 Hour • 10K • 5K
Summit Backyard Ultra (Last Person Standing)
Meadowlakes Turkey Trot
Colorado River Run 100 Mile • 50 Mile • 50K • Marathon • Half Marathon • 10K • 5K
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 9 Marble Falls events
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