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STORM Hill Country Challenge (#5, Spring Series)

Register Here

April 2, 2023

The Texas Mountain Bike Racing Association’s (TMBRA) Race #5 of the Trek Texas presents the TMBRA XC MTB State Championship Series comes to our backyard as STORM hosts the Hill Country MTB Challenge at Flat Rock Ranch in Comfort, TX.  This is the largest mountain bike race in the San Antonio area with over 300 racers competing in the different age, gender, and experience-based classes.

This year, Juniors 10U, 12U, 13-14 and Pro, Cat 1, Cat 2, and Cat 3 of all ages will all be racing on Sunday.

  • Volunteer Sign-Up – we are always in need of volunteers. Volunteers receive free land access, camping, meals, and t-shirt.
  • Race Registration
    • Online pre-registration closes on Saturday, April 1, 2023, at 7:00pm CST
    • Late and on-site online registration will be available after online pre-registration closes until 30 minutes before Category start time on Sunday, April 2, 2023, for a $25 additional fee. Please register before arriving at the race venue to avoid delays as cell coverage is spotty and onsite online registration is expected to be very slow. For any payments that need to be made onsite, credit card processing is not guaranteed. Cash is best form of payment.
  • This race IS NOT a sanctioned USA Cycling race and no points or rankings will be uploaded to the USA Cycling database. However, we are using USA Cycling insurance for this race.
  • NO USA Cycling one-day licenses or annual race licenses are needed for this race.
  • TMBRA Spring XC Series Rules and Regulations
  • Course Maps
  • Race Flyer (see Event Notes on BikeReg registration pages above)
  • Land use fee is NOT included in registration fee. Land use fee for Flat Rock Ranch must be paid by everyone entering the ranch regardless of racing/non-racing status. Discounts may apply. Visit the Flat Rock Ranch website for more details.
  • Merchandise (T-shirt)
  • Sponsors
  • Food & Drink – Three Brothers Pizza from Boerne will serve up pizza, calzones, hot sandwiches, chips, and soft drinks from approximately 10:30am-3:00pm on Sunday (or until they sell out).




Pre-purchase through the BikeReg site. Any remaining t-shirts will be available for purchase on-site.


Sponsoring the 24th Annual STORM Hill Country MTB Challenge is a great way for you to market your business to an audience of mountain bike enthusiasts locally in San Antonio and across Texas, as well as the rest of the USAC South Central Region (Louisiana, Arkansas, Oklahoma).

Sponsors underwrite the costs of timing and scoring, awards, schwag raffle items, EMS services, USAC race officials, supplies, and more. STORM always strives to host a high-quality racing event and cannot do so without the support of community partners! If you want to be a sponsor, please contact for more information! South Texas Off Road Mountain-Bikers (STORM) is an all-volunteer 501(c)3 nonprofit organization that relies on membership and fundraising events like this race to support its programs.


Action Bikes


Hill Country Bicycle Works
Hill Country Bicycle Works
Ride Away Bicycles


Freetail Brewing Company
Hotel Giles


Trek Texas presents the TMBRA XC MTB State Championship Series

The event is finished.


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