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3rd Annual Triathlon

Aquarena Springs TRI

Event Purpose:
The Rotary Club of Greater San Marcos is hosting a park sprint triathlon which sponsors EarlyAct First Knight at Travis Elementary School in San Marcos, Texas. The EarlyAct programs are offered 10 minutes each school day. The program was developed since there is a "need for character education" in schools, so an "early innovation" was facilitied to build up our children of tomorrow. This is a "timely opportunity" that Rotary is glad to become a part of. (Quotes from EarlyAct website )

All proceeds will benefit the Greater San Marcos Rotary Foundation (501c3).

About This Event:
The Rotary Club of Greater San Marcos is proud to offer a sprint triathlon at the renowned Aquarena Springs. "The prestigious Spring Lake is located in a 250-acre preserve. About half of the property is in the Edwards Aquifer Recharge Zone, and all of the property is part of the Sink Creek watershed." (hillcountryoutdoorguide.com)

With such a precious protected lake, the lake is closed to the public to swim in 363 days out of the year. Only two times during the course of a year is the crystal clear lake opened for public swim. The Rotary Club of Greater San Marcos Aquarena Springs TRI is one of those times. It is indeed a privilege to swim in the lake!

The Aquarena Springs TRI has limited slots available. It's important to register NOW to insure your participation. As a participant, you will receive a registration packet, which includes a t-shirt, promotional materials from sponsors, a free coupon booklet to the famous outlet malls, and you will be able to take part in the post-event food and entertainment. This would be a GREAT time for you to mingle with fellow participants. Additionally, awards will be given to each division.


-Under 19, 19-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60+


-Overall men's & woman


Must show USAT member card and photo ID at packet pickup (see further below for packet pick-up information).  All relay members must come to pick up packet together.  $12 USAT (cash only) one day permit available on packet pickup day only.  Please do not send USAT permit fee with entry fee.  


MANDATORY PRE-RACE MEETING: 7:45AM (In front of swim portion– near loudspeaker. You will gather by the swim area based on number.  Signs will be displayed by segments of numbers.)


Volunteers are always welcome and needed!
For more information about his opportunity check here or email rotarytriathlon@rotarysanmarcos.com

Interested in a sponsorship?  We have great opportunities to advertise your business and offer a great venue in assisting with bettering our youth.  All of  the proceeds to benefit the Greater San Marcos Rotary Foundation.  The foundation is a 501c3 which offers scholarships to high school students in then hill country and also supports EarlyAct First Knight, which is a program that offers character development to elementary children. 

If you are interested, please click here or email rotarytriathlon@rotarysanmarcos.com  for more information

Registration Information:

  • Cost is $85 (Park Sprint Triathlon) per person or $120 per relay team.  NON-REFUNDABLE
  • PARK Sprint: 500 meters swim, 14 mile bike, 5k run
  • This is a USAT sanctioned event—All USAT rules will be enforced.
  • Event on Saturday, September 20, 2014 at 8:00 a.m.
  • Parking will be available at the Texas State parking lot across from Aquarena Springs Center entrance.
  • Located in San Marcos, Texas at Aquarena Springs, 921 Aquarena Springs Dr. (click icon)  
  • Packet pickup will be at Anytime Fitness (San Marcos) and an Austin location to be announced. 
    • San Marcos: September 19th, Friday, at Anytime Fitness from 4pm-7pm, 1917 Dutton Dr #202, San Marcos, TX
    • San Antonio: To Be Announced  
    • Austin: To Be Announced
    • Out of Town: given on race day from 6:30 am-7:30 am, but has to reserve their spot.  There will be a $10 fee on race day. Email us at rotarytriathlon@rotarysanmarcos.com

  • Medals will be awarded (1st, 2nd, &3rd) to each division. 
  • Must show photo ID and USAT card (or temporary printed card)

    ~USAT Membership: $39 Annual or $10 One-day (packet pickup day)

    ~One day passes paid with CASH AND CHECK ONLY


Register NOW

Post-Event Food & Entertainment held following the event

  • The Rotary Club of Greater San Marcos will host food and entertainment. 
  • Location of the event to be held at Aquarena Springs Center
  • If you are interested in avoiding the early morning drive to the event,  stay the night in San Marcos at Embassy Suites.   Embassy blocked off rooms for ease in booking your room.   



Individual Event Information:


NO SWIMMING BEFORE OR AFTER THE RACE. We will have a time trial start with one person over the start mat approximately every three seconds. The swim takes place in a spring fed lake with a large amount of aquatic life. If you get off course, you may swim through some hydrilla or other plant life. Don’t panic, just keep swimming and you will get through it. Our lifeguards will be there to make sure you are safe and we will cut back the plants as best we can before the race. Approximately 50 meters from the finish, the lake becomes shallow with tall plants, so be extra cautious in this area.

Please be aware that this is a RARE opportunity to swim in undisturbed, protected waters that are an asset to San Marcos and the surrounding areas.



After you exit the water, you will run about 50 meters to the transition area; an aid station will be here. Open transition area - no assigned location per athlete.  The swim-in and run-out will be at the end of the parking lot that is furthest from the park entrance. The bike exit and entrance will be on the entrance side of the parking lot. Remember to have helmet securely fastened before you do anything else!



The course is a little bumpy in some areas, but is smooth overall. We will have police protection at the major intersections, but this is an open course so please be careful of traffic at all times. There are a few rolling hills throughout the course but overall it is nicely graded will decent road conditions. The roads will be swept in problem areas, yet special caution should be taken to avoid any falls. Listen for volunteers warning athletes to slow down.





The run course will began and end at Aquarena Springs.  Half of the course will be pavement and grass with the remaining half on dirt and granite trails.  Please prepare accordingly.  The course will be clearly marked where we want you to run.    



Complimentary food and drinks will be available.  Afterwards, the awards will be handed out following the event! 



Parking will be available across from the Aquarena Springs enterence, next to the railroad tracks.

From Austin/Dallas/Waco and the I-35 Corridor North:  Follow I-35 South to San Marcos, take exit #206 . Stay on the access road. Merge right onto Aquarena Springs Drive/Loop 82. You will pass two traffic lights and cross over a railroad track. Bobcat Stadium will be on your left. The entrance to the Aquarena Center is Immediately after the railroad tracks on the right.

From San Antonio/Corpus Christi/Laredo and I-35 Corridor South:  Follow I-35 North to San Marcos, take Exit #206&nbs