2020 St. Marks Duathlon


The St. Marks Duathlon will be held in the quaint waterfront town of St. Marks, Florida and the bike portion will carry participants out into rural portions of Wakulla County crossing over the St. Marks River and passing by the entrance to the St. Marks National Wildlife Refuge. Transition is located within walking distance of the San Marcos de Apalache Historic State Park and the local shops and restaurants of downtown St. Marks.  The race, which was held from 2012 – 2014, has been resurrected and held since 2017 by the Gulf Winds Triathletes.  2020 will mark four consecutive years.  We hope this is the best yet!

A portion of the proceeds will go to support the Ron Strong Foundation.  More can be learned on this wonderful group at https://www.ronstrong.org 

Be sure to bring your family and friends to cheer on competitors and get a taste of the Real Florida.

We look forward to seeing you on Sunday, 3/22. If you have any questions, please email us at info@gulfwindstri.com.  And you can visit our club website for more info at www.gulfwindstri.com


The Duathlon will be a single wave start at 8:00 AM at the south end of Mock Street just west of transition.

Arrive early for best parking. Parking will be along the edge of transition. Volunteers will be there to direct you for parking as early as 6:15 AM!


Bib and t-shirt can be picked up on Saturday, 3/21 between 2 PM – 5 PM at Bird Legs Bicycles located at 12784 Capital Cir NE, Tallahassee, FL 32308. On Race Day you can pick up your Bib and T-shirt at transition located at 25 Riverside Drive, St. Marks, Florida from 6:30-7:30 AM. *Please note that a shirt is NOT guaranteed after March 4th. They are first come, first served and available while supplies last.

The race consists of a 5K (3.1 miles) run, 20K (12.4 miles) bike, and 2.5K (1.6 miles) run in that order. 

Run #1 Route:  http://www.mapmyrun.com/routes/view/1368029305

Bike Route:  http://www.mapmyride.com/routes/view/1368016297 

Run #2 Route:  http://www.mapmyride.com/routes/view/1464832579 


The first price increase occurs at 12:00 am on February 1st. Online registration ends at 12 a.m. on Thursday, March 19.  In-person registration can still occur at packet pickup on Saturday, 3/21 between 2 PM – 5 PM at Bird Legs Bicycles located at 12784 Capital Cir NE, Tallahassee, FL 32308. CASH ONLY – NO CREDIT CARDS ACCEPTED! Race day packet pickup is available at transition, too. NO RACE DAY REGISTRATION!


• At the finish line there will be refreshments and snacks.  Race awards will be held later in the day at 2:30 pm at Proof Brewing in Tallahassee.

Refunds/Registration Changes

As a USAT sanctioned event the St. Marks Duathlon has a NO REFUND policy. Injuries or special circumstances MAY be addressed on a very limited case-by-case basis with a licensed physician’s documentation, but there are NO REFUNDS. Registration changes (to division/category) will be addressed on a very limited case-by-case basis until March 19. There is a $15 fee for ANY changes to your registration.

Right to Cancel or Reschedule

The St. Marks Duathlon reserves the right in the event of inclement weather, emergency, or natural disaster to cancel the race or move to a later time that day. In the event of CANCELLATION, there will be NO REFUND OF ENTRY FEES

Click for 2019 Results!