Mustang Marathon (Hill Country Trivium) Road Race

About the Event

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.

Races Offered

Mustang Marathon 13.1mi

Nov 08, 2026

straighten

Distance — 13.1 Miles

terrain

Type — Running

timer

07:00

sell

$63.00

Mustang Marathon 26.2mi

Nov 08, 2026

straighten

Distance — 26.2 Miles

terrain

Type — Running

timer

07:00

sell

$77.00

Mustang Marathon 50k

Nov 08, 2026

straighten

Distance — 50K

terrain

Type — Running

timer

07:00

sell

$84.00

Mustang Marathon 10k

Nov 08, 2026

straighten

Distance — 10K

terrain

Type — Running

timer

08:00

sell

$45.00

Mustang Marathon 5k

Nov 08, 2026

straighten

Distance — 5K

terrain

Type — Running

timer

08:30

sell

$28.00

Mustang Marathon Youth 1-Mile Run (12 & Under)

Nov 08, 2026

straighten

Distance — 1 Miles

terrain

Type — Running

timer

09:30

sell

$10.00

Weather Overview

These values represent the 3-year monthly averages for November in Marble Falls.

Temp (°C)

Feels Like (°C)

thermostat 11.8° / 23.0°

wb_sunny 10.1° / 21.3°

Wind (km/h)

Humidity (%)

air 10.4 /

water_drop 66.4%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 11.8° / 23.0°

wb_sunny 10.1° / 21.3°

air 10.4 km/h

water_drop 66.4%

About Marble Falls

Learn more about the host city, Marble Falls.

Marble Falls is a city in Burnet County, Texas, United States. As of the 2020 United States Census, the city population was 7,037. The 2024 population was estimated to be 9,413. Lake Marble Falls is part of the Highland Lakes on the Colorado River, the largest chain of lakes in Texas. Marble Falls was founded by Adam Rankin Johnson in 1887, a former Indian fighter and Confederate general.