Haunted 5K, 10K & 13.1M at Pflugerville, TX (41)
Oct 10Pflugerville, TXHalf Marathon, 10K +1
Half Marathon, 4 weeks before race day, 40 mi away, registration open
50KMarathonHalf Marathon10K5KRegistration open
Mustang Marathon (Hill Country Trivium) Road Race
Marble Falls, Texas
- Entry from
- $10
- Days to go
- 33
At a glance
- Date
- Nov 8, 2026
- Location
- Marble Falls, Texas
- Distances
- 50K, Marathon, Half Marathon, 10K, 5K
- Registration
- Registration open until Nov 9, 2026, via runsignup.com
- Official site
- perspectivepacing.com
- Listed from
- RunSignUp
- Last checked
- Oct 5, 2026
Plan this race for free
Aid stations, cutoffs and pacing in one plan, with the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my planAbout 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.
Key dates
Registration opens
Mar 13, 2026
Tier 1 ends
Mar 16, 2026
Tier 2 ends
Mar 21, 2026
Tier 3 ends
Oct 10, 2026
Race day
Nov 8, 2026
Standard ends
Nov 8, 2026
Registration closes
Nov 9, 2026
Tier 4 ends
Nov 9, 2026
Pricing
Mustang Marathon 50k
Tier 3, then $125 from Oct 10, 2026
$120
Mustang Marathon 26.2mi
Tier 3, then $115 from Oct 10, 2026
$110
Mustang Marathon 13.1mi
Tier 3, then $95 from Oct 10, 2026
$90
Mustang Marathon 10k
Tier 3, then $70 from Oct 10, 2026
$65
Mustang Marathon 5k
Tier 3, then $45 from Oct 10, 2026
$40
Mustang Marathon Youth 1-Mile Run (12 & Under)
Standard, until Nov 8, 2026
$10
Email me updates about Mustang Marathon (Hill Country Trivium) Road Race
Registration openings and major changes, like a new date or a cancellation.
Entry transfers
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
Tune-up races
Haunted 5K, 10K, & 13.1M at Temple, TX (41)
Oct 10Temple, TXHalf Marathon, 10K +1
Half Marathon, 4 weeks before race day, 66 mi away, registration open
Autumn Harvest 50K • 20-Miler • 10-Miler • 5-Miler • Full • Half • 10K • 5K • Big Bastrop Backyard Ultra (Last Runner & Last Rucker Standing)
Oct 10Bastrop, TXBackyard Ultra, 50K +7
Half Marathon, 4 weeks before race day, 64 mi away, registration open
Cookie Run 5K/10K/13.1 SAN ANTONIO
Oct 10San Antonio, TXHalf Marathon, 10K +2
Half Marathon, 4 weeks before race day, 81 mi away, registration open
Straight-line distance
Similar races
Colorado River Run: 100-Mile & 50-Mile Ultra, 50K, Marathon, Half-Marathon, 10K and 5K
Nov 27Marble Falls, TX250K, 100 mi +6
Also 50K, 1 mi from Mustang Marathon (Hill Country Trivium) Road Race, registration open
Salmagundi Trail Race
Nov 7Dripping Springs, TX52K, Marathon +3
Also 50K, 29 mi from Mustang Marathon (Hill Country Trivium) Road Race, registration open
Fields of Gold 50K • Marathon • Half Marathon • 12 Hour • 1 Hour • 10K • 5K
Oct 24Marble Falls, TX50 mi, 12 hr +5
Also 50K, 1 mi from Mustang Marathon (Hill Country Trivium) Road Race, registration open
Monster Mash Bash Run For a Cure
Oct 31Burnett, TX30 mi
Also 50K, 16 mi from Mustang Marathon (Hill Country Trivium) Road Race, registration open
Straight-line distance
More 50K Races in Texas
All 50K Races in TexasAutumn Harvest 50K • 20-Miler • 10-Miler • 5-Miler • Full • Half • 10K • 5K • Big Bastrop Backyard Ultra (Last Runner & Last Rucker Standing)
Oct 10Bastrop, TXBackyard Ultra, 50K +7
Caveman Challenge at Waterloo Lake
Oct 10Denison, TX50K, Marathon +3
The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash
Oct 10Glen Rose, TX100K, 50K +3
Trailway Trail Race
Oct 10Somerville, TX50K, Marathon +3
Galveston Ultra Trail
Oct 17Galveston, TX50K, Half Marathon +3
Inks Lake Trail Run/Ruck
Oct 17Burnet, TX50K, Marathon +3
Love Never Ends Trail Run
Oct 17Mt Pleasant, TX100K, 50 mi +3
Palo Duro Trail Run
Oct 17Palo Duro Canyon, TX50 mi, 50K +1
South Texas Ultra
Oct 17Leakey, TX50K, 35K +2
Fields of Gold 50K • Marathon • Half Marathon • 12 Hour • 1 Hour • 10K • 5K
Oct 24Marble Falls, TX50 mi, 12 hr +5
Mujeres and Marigolds
Oct 24Smithville, TX100K, 50K +3
SARR Rocky Horror Trail Run
Oct 24San Antonio, TX53K, 27K +2
Races Near Austin
All races near AustinColorado River Run: 100-Mile & 50-Mile Ultra, 50K, Marathon, Half-Marathon, 10K and 5K
Nov 27Marble Falls, TX250K, 100 mi +6
Goliath's 50
Feb 20, 2027Marble Falls, TX50 mi, 50K +4
Monster Mash Bash Run For a Cure
Oct 31Burnett, TX30 mi
Big Texas Ultra
Nov 6Johnson City, TX15K
Desert Wolf
May 1, 2027Johnson City, TX100K, 50K +3
Longhorn Last Person Standing
Dec 5Dripping Springs, TXBackyard Ultra
Salmagundi Trail Race
Nov 7Dripping Springs, TX52K, Marathon +3
2027 Texas Ultra Series
Dec 31Multiple Cities, TX50K, 15K +2
Fire Trail Running Festival
Jun 12, 2027Spring Branch, TX50K, 25K +1
November Races Nearby
All November racesBig Tex Backyard Ultra
Nov 7San Felipe, TXBackyard Ultra, 3 mi
Friends of Government Canyon Recharge Run 8K/15K
Nov 7San Antonio, TX15K, 8K
Mountain Lakes Mania 5K & 10K
Nov 7Bluff Dale, TX10K, 5K
4th Annual Monk Strong Memorial Rugged Trail Run & SO MUCH MORE!
Nov 14Stephenville, TX10K, 5K
Rise El Taco Loco
Nov 14San Antonio, TX100 mi, 100K +4
Wild Hare Trail Race
Nov 14Warda, TX50 mi, 50K +2
Race planning
Plan Mustang Marathon (Hill Country Trivium) Road Race with Crewable
Build your aid station plan, organize your crew, and dial in your nutrition strategy. Everything you need to finish strong.
Build my planAre you the race director for Mustang Marathon (Hill Country Trivium) Road Race?
Claim this race to manage registration, volunteers, and race day.