Island Girl Triathlon and Duathlon
About this race
Join us at Texas' largest crystal clear lagoon in one of the hottest new communities in the Houston area. This LADIES ONLY race will include a Sprint Triathlon and Relay as well as a Duathlon for those just not ready for the water. Your open water swim will be in the crystal clear waters of the Lago Mar Lagoon where your race will end and the fun begins on their white sand, palm tree-lined beaches.
The Sprint Triathlon will consist of a 300 meter swim, an 8-mile bike and a 2 Mile run. The Duathlon will start with a 1 mile run and then the same 8-mile bike and 2 Mile run as the Sprint Tri. All athletes will finish along the beach and be greeted with margaritas and more, and you are welcome to stay and enjoy all the amenities of LagoonFest after. You'll swear you were in the Caribbean and not Houston!
All athletes will receive a custom race bib and tech t-shirt/singlet along with other yet-to-be-determined, Island-appropriate swag. You will also be eligible for age-group awards, and they will be something worth winning for! Your entry also includes admission to the LagoonFest for the day, and discounted options for your friends and family. Come celebrate the ladies in your life at a race full of encouraging women of all skill levels; this race is perfect for first-timers and all triathletes.
Awards in Age Groups:
- Sprint : Top Overall and Masters (no double dip), Top 3 in 0-14, and 5 year age groups 15-19 up to 70+
- Athena: Top 3 individuals
- Relay : Top 3 teams
- Du: Top Overall, and Top 3 in 0-19 and 10 year age groups up to 70+.
Extra passes available through Lagoonfest. Use code Race to receive 50% off admission.
https://lagoonfesttexas.com/tickets/
Pick your distance
Duathlon
Duathlon
1-mile run , 8-mile bike, 2-mile run
Triathlon
Sprint Triathlon
300 meter swim, 8-mile bike, 2-mile run
Sprint Triathlon - Relay
Teams of 2-3 for the Sprint Distance Triathlon
Typical race-day weather
Based on 5 years of Open-Meteo archive data for this event's race dates in Texas City, plus the 3 days either side.
The sun rises at 7:10 AM and sets at 7:10 PM local time (CDT) in Texas City on September 27, 2026 — 11h 59m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
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Results — Island Girl Triathlon and Duathlon
Other races near Texas City
Different organizers, within 40 miles, in the next three months
Texas City Half Marathon, 10k, 5k, & Mile
Savannah Memorial 5K
Walt Cunningham Angels' Race for Space 5k/10k and Family Fun Run presented by the Ray Schlaff Family
Celebrate Life Survivors 5K Walk/Run - Gulf Coast, TX
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 5 Texas City events
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