Marble Falls, TX | Sunday, November 8, 2026Registration Open
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.
Available Distances
Awards & Prizes
EARN CASH BACK BY REFERRING FRIENDS WITH OUR REFERRAL OFFER!
Earn cash back for recruiting fellow runners! HERE IS HOW IT WORKS: REGISTER for any Hill Country Trivium distance* SHARE your unique referral link with your running buddies or post on social media (you will find the link on your confirmation page and email) EARN up to $25 when 3 of your referrals register to run using your special link. SHARE AGAIN! Earn up to another $25 with 5 more referrals and they register to run. *Must be 5K or longer; above example based on HCT 26.2mi race.