A Triathlon with attitude! Who's Tri is it? My Tri! Who's Training is it? My Training! Who's PR-formance is it? My PR! DON'T TREAD ON MY TRI! is the battle cry.

This Classic Texas Hill Country Triathlon Event will be an experience you will not forget! In the beautiful area of San Marcos with rich history in triathlon. Swim in the most beuatiful lake in Texas, Spring Lake. Bike with the epic views of the Texas Hill Country. Run around the Spring Lake area. Massive Scallywompus Style Party at the finish!

NOTE ABOUT DISCOUNT CODES;  If you are 16 or younger, or 70 and over you get an automatic 50% discount.  Do not use an additional discount code.  You will be disqualified if you combine an additional discount code. 

Sprint Distance- Swim 500 meters, Bike  12 miles, Run 3 miles

DU3- Your choice of Swim/Bike, Swim/Run, or Run/Bike/Run we don't discriminate if you don't like all three!


5K- Just run short

10K- Just run a bit more

Half Marathon- Leave it all out there!

Registration fees 424 spots remaining

Sprint Tri 424 spots remaining

Sprint Distance

Triathlon Relay 424 spots remaining

Relay option for triathlon- 2 or 3 person options

DU3 1 424 spots remaining

Swim/ BIke

DU3 2 424 spots remaining

Swim/ Run

DU3 3 424 spots remaining

Run/Bike/ Run

5K 424 spots remaining

5K Run only

10K 424 spots remaining

10K Run only

Age Deals

If you are 16 and younger we are giving you at 50% discount we want you to also take ownership of the race.  When you finish, if you are able, come to the finish line and help the other runners. Stay and help clean up. You are young and we need your energy to make everything perfect.

Then be an ambassador for running and our running events, help us promote the events and the volunteers where ever you go. And on social media, snapchat, facebook, instagram..etc…

70+ participants will also get 50% off. If you can afford it we request that you make a small donation to marrowmatch. If you can not that is fine. We also ask that you take ownership of these races and help with advice to younger runners to keep them calm and caring.


We want your leadership in our runner community.

Thank you.

Event Schedule

  • July 22 7:00 AM CDT - Don't Tread on my Tri

Contact Information

Event Location

Meadows Center Glass-Bottom Boat Tours, San Marcos Springs Drive, San Marcos, TX, United States

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