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Island Girl Triathlon and Duathlon 2026

Date
Sunday, October 25, 2026
Start time
7:00 AM start (Chicago)
Entry fee
From $119 · goes up to $129 on Oct 1, 2026
Included with entry
Includes a shirt
Fundraising
Takes optional donations when you register
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Events and entry fees

EventDistanceWhenEntry feeCap
DuathlonDuathlonRun 1 mi · Bike 8 mi · Run 2 miOct 25, 20267:00 AM$119$129 after Oct 1, 2026–
Sprint TriathlonSprint TriathlonSwim 300 m · Bike 8 mi · Run 2 miOpen water swimOct 25, 20267:00 AM$129$139 after Oct 1, 2026–
Sprint Triathlon - RelaySprint TriathlonRelay or teamOpen water swimOct 25, 20267:00 AM$209$219 after Oct 1, 2026–

Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.

Register on RunSignup

The Duathlon fee goes up to $129 on Oct 1, 2026.

Race day planning

Entry fee schedule

  • Duathlon: $119 until Oct 1, then $129 until Oct 25.
  • Sprint Triathlon: $129 until Oct 1, then $139 until Oct 25.
  • Sprint Triathlon - Relay: $209 until Oct 1, then $219 until Oct 25.

Online registration closes Oct 25, 2026, unless the race fills first.

Light and altitude

Sunrise on race morning is at about 7:27 AM, and the Duathlon starts at 7:00 AM.

Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.

Start location and course

15 River Ranch Blvd., Dayton, TX 77535

The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.

Sprint Triathlon

129
finishers
1:10:34
median (6:53 /mi)
48:02
winning time
100% / 0%
women / men
median 1:10:3448:461:42:20
Finish times, fastest to slowest. Each bar is a slice of the field; the dashed line is the median.

Duathlon

20
finishers
1:12:56
median (6:38 /mi)
44:29
winning time
100% / 0%
women / men

Sprint Triathlon - Relay

6
finishers
1:13:16
median
55:32
winning time
100% / 0%
women / men

Aggregated from official results for Island Girl Triathlon and Duathlon. Individual finisher names are not stored here.

How fast do you need to be at Island Girl Triathlon and Duathlon?

At the 2025 Sprint Triathlon, the fastest tenth finished in 57:18 or better, the top quarter in 1:03:49, and half the field in 1:10:34; the last tenth came in after 1:27:35.

At the 2025 Duathlon, the fastest tenth finished in 59:01 or better, the top quarter in 1:07:59, and half the field in 1:12:56; the last tenth came in after 1:20:29.

At the 2025 Sprint Triathlon - Relay, the fastest tenth finished in 1:03:52 or better, the top quarter in 1:12:15, and half the field in 1:13:16; the last tenth came in after 1:21:18.

Third place by age group, 2025 Sprint Triathlon
AgeWomenMen
Under 2058:12n/a
20-291:00:51n/a
30-3957:08n/a
40-4955:58n/a
50-591:00:15n/a
60-691:06:38n/a

Groups with fewer than five finishers are left out. Awards vary by race; check the race's rules.

What would my time get me?

Where a finish time would have placed in 2025.

Finishers by year

Down 30 percent since 2023.

All events combined, from official results.

Island Girl Triathlon and Duathlon Sprint Triathlon year by year

From 2023 to 2025, the field went from 185 to 129 finishers, and the median time rose from 1:06:43 to 1:10:34.

YearFinishersMedianFastest tenthWinner
2025129 (+3%)1:10:34under 57:1848:02
2024125 (-32%)1:08:17under 54:3646:35
20231851:06:43under 52:5846:42

From each year's official results for the Sprint Triathlon; virtual options are left out.

From the race's page

What the organizers of Island Girl Triathlon and Duathlon cover on their registration page, in brief.

Schedule and packet pickup

Packet Pickup

PACKET PICKUP DATES AND TIMES. TBD. Race Day Pickup ONLY if purchased with registration - 5:45-6:45 am in the parking lot next to transition. If you have not purchased Race Day Pickup, you can do so in your RunSignup profile. Visit this…

Schedule and packet pickup

Schedule of Events

*All Dates and Times are tentative and subject to change. Sunday, September 27, 2026 - RACE DAY. 5:45am - Parking Opens/Transition Opens. 5:45am to 6:45am - Race morning packet pickup. 6:45am - Transition Area Closes. 6.55am - National…

Course

Course Maps

CLICK HERE for the online Island Girl Triathlon map. CLICK HERE for the online Island Girl Duathlon map. Bike Course sponsored by Sun & Ski Sports.

Course Maps, from the Island Girl Triathlon and Duathlon page

The cause

Spectator Info

All ladies will receive FREE admission to the Lagoonfest Texas for the entire day. Friends and family that wish to come and cheer you on or just spectate will be allowed inside FREE until the public is allowed in, at which time they must…

Full details on the race's RunSignup page

Race details

Where
15 River Ranch Blvd., Dayton, TX 77535Map
Course
Road
Included with entry
Tech Singlet
Donations
Accepted when you register
Distances
Sprint Triathlon, Duathlon
Editions
2026 (Oct 25, 2026), 2025 (Sep 14, 2025), 2024 (Sep 15, 2024), 2023 (Sep 17, 2023), 2022 (Sep 18, 2022)

Organize this race? Add details or a correction

Plan your race

Quick answers

When is Island Girl Triathlon and Duathlon?
Sunday, October 25, 2026, starting at 7:00 AM.
How much does it cost?
Entry starts at $119 before processing fees, and rises to $129 on Oct 1, 2026.
When does registration close?
Online registration closes Oct 25, 2026, unless the race fills first.
Do athletes get a shirt or medal?
Entry includes a shirt, according to the race's registration page. Check it for sizes and whether kids' races get the same.
Can I donate to a cause when I register?
Yes. The registration form offers an optional donation, usually for the charity or nonprofit the race supports. The race's own page names the cause.
What distances are offered?
Sprint Triathlon, Duathlon.
How big is it, and how fast?
In 2025, 129 athletes finished the Sprint Triathlon; the median finish was 1:10:34 and the winner finished in 48:02.
Where does it start?
15 River Ranch Blvd., Dayton, TX 77535.

From the organizers

Join us at the beautiful Angel Lagoon for a morning at the beach! 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 Angel Lagoon where your race will end and the fun begins on their white sand, palm tree-lined beaches.

Read the full description on RunSignup