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| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| Duathlon | DuathlonRun 1 mi · Bike 8 mi · Run 2 mi | Oct 25, 20267:00 AM | $119$129 after Oct 1, 2026 | – |
| Sprint Triathlon | Sprint TriathlonSwim 300 m · Bike 8 mi · Run 2 miOpen water swim | Oct 25, 20267:00 AM | $129$139 after Oct 1, 2026 | – |
| Sprint Triathlon - Relay | Sprint TriathlonRelay or teamOpen water swim | Oct 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.
The Duathlon fee goes up to $129 on Oct 1, 2026.
Online registration closes Oct 25, 2026, unless the race fills first.
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.
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.
Aggregated from official results for Island Girl Triathlon and Duathlon. Individual finisher names are not stored here.
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.
| Age | Women | Men |
|---|---|---|
| Under 20 | 58:12 | n/a |
| 20-29 | 1:00:51 | n/a |
| 30-39 | 57:08 | n/a |
| 40-49 | 55:58 | n/a |
| 50-59 | 1:00:15 | n/a |
| 60-69 | 1:06:38 | n/a |
Groups with fewer than five finishers are left out. Awards vary by race; check the race's rules.
Where a finish time would have placed in 2025.
Down 30 percent since 2023.
All events combined, from official results.
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.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2025 | 129 (+3%) | 1:10:34 | under 57:18 | 48:02 |
| 2024 | 125 (-32%) | 1:08:17 | under 54:36 | 46:35 |
| 2023 | 185 | 1:06:43 | under 52:58 | 46:42 |
From each year's official results for the Sprint Triathlon; virtual options are left out.
What the organizers of Island Girl Triathlon and Duathlon cover on their registration page, in brief.
Schedule and 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
*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
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.
The cause
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…
Organize this race? Add details or a correction
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.