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Are you ready for one of the most challenging & amazing road races in all of Texas? 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!

How to enter the Hill Country Trivium

  1. 10K

    Run 10km
    Event passed
  2. Half Marathon

    Run 13.1mi
    Event passed
  3. 50K

    Run 50km
    Event passed
  4. 5K

    Run 5km
    Event passed
  5. Marathon

    Run 26.2mi
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Event Details

What’s Included
While every racer will get some cool swag, Oct. 13 is the deadline to get a shirt.
Raceday Logistics
Sunday - Mustang Stadium, Marble Falls, TX
Packet Pickup from 5:30am–8:00am - (we strongly suggest runners pick up their packets before race day in order to avoid long lines and delays on race day).
Chip Pickup from 5:30am-8:00am - tell us your bib # & we hand you a chip attachd to a strap.
50k & Marathon Race Start - 7:00am
Half Marathon Race Start - 7:30am
10k Race Start - 8:00am
5k Race Start - 8:00am
Phoenix Fun Run at 9:30am (entry is free but all donations benefit the Phoenix Center)
Course closed - 4:00pm (that’s a 9 hour cutoff for the 50k & marathon)
Awards are given out in a timely manner upon leaders finishing the race. If you think you may have won an award, DO NOT LEAVE..inquire with timing/RD, as we do not mail awards.

Hill Country Trivium weather forecast

Clear throughout the day.

Predicted highs
Predicted lows
IconLight breeze possible, up to 8mph

Meet the organizer

Organizer's website

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